210120221202012 has 72 divisors (see below), whose sum is σ = 581576415179760. Its totient is φ = 63436092433920.

The previous prime is 210120221201923. The next prime is 210120221202019. The reversal of 210120221202012 is 210202122021012.

It is a happy number.

210120221202012 is a `hidden beast` number, since 210 + 1 + 20 + 221 + 202 + 0 + 12 = 666.

It is a super-2 number, since 2×210120221202012² (a number of 29 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210120221202019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 986151133 + ... + 986364180.

It is an arithmetic number, because the mean of its divisors is an integer number (8077450210830).

Almost surely, 2^{210120221202012} is an apocalyptic number.

210120221202012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

210120221202012 is an abundant number, since it is smaller than the sum of its proper divisors (371456193977748).

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

210120221202012 is a wasteful number, since it uses less digits than its factorization.

210120221202012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972515603 (or 1972515598 counting only the distinct ones).

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

Adding to 210120221202012 its reverse (210202122021012), we get a palindrome (420322343223024).

The spelling of 210120221202012 in words is "two hundred ten trillion, one hundred twenty billion, two hundred twenty-one million, two hundred two thousand, twelve".