210021220212012 has 192 divisors, whose sum is σ = 629181039674880. Its totient is φ = 59876196710400.

The previous prime is 210021220211993. The next prime is 210021220212049. The reversal of 210021220212012 is 210212022120012.

It is a happy number.

210021220212012 is a `hidden beast` number, since 210 + 0 + 21 + 220 + 212 + 0 + 1 + 2 = 666.

210021220212012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 50866087 + ... + 54839777.

It is an arithmetic number, because the mean of its divisors is an integer number (3276984581640).

Almost surely, 2^{210021220212012} is an apocalyptic number.

210021220212012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210021220212012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314590519837440).

210021220212012 is an abundant number, since it is smaller than the sum of its proper divisors (419159819462868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210021220212012 is a wasteful number, since it uses less digits than its factorization.

210021220212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3976349 (or 3976341 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 210021220212012 its reverse (210212022120012), we get a palindrome (420233242332024).

The spelling of 210021220212012 in words is "two hundred ten trillion, twenty-one billion, two hundred twenty million, two hundred twelve thousand, twelve".