10202220211212 has 36 divisors (see below), whose sum is σ = 25789508144400. Its totient is φ = 3400665880032.

The previous prime is 10202220211201. The next prime is 10202220211213. The reversal of 10202220211212 is 21211202220201.

It is a happy number.

10202220211212 is a `hidden beast` number, since 1 + 0 + 20 + 2 + 220 + 211 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (10202220211213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1405587 + ... + 4730762.

Almost surely, 2^{10202220211212} is an apocalyptic number.

10202220211212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10202220211212 is an abundant number, since it is smaller than the sum of its proper divisors (15587287933188).

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

10202220211212 is a wasteful number, since it uses less digits than its factorization.

10202220211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6182542 (or 6182537 counting only the distinct ones).

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

Adding to 10202220211212 its reverse (21211202220201), we get a palindrome (31413422431413).

The spelling of 10202220211212 in words is "ten trillion, two hundred two billion, two hundred twenty million, two hundred eleven thousand, two hundred twelve".