202111021020212 has 12 divisors (see below), whose sum is σ = 353877263667396. Its totient is φ = 101003231400960.

The previous prime is 202111021020197. The next prime is 202111021020277. The reversal of 202111021020212 is 212020120111202.

It can be written as a sum of positive squares in 2 ways, for example, as 171904719227536 + 30206301792676 = 13111244^2 + 5496026^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13069768589 + ... + 13069784052.

It is an arithmetic number, because the mean of its divisors is an integer number (29489771972283).

Almost surely, 2^{202111021020212} is an apocalyptic number.

It is an amenable number.

202111021020212 is a deficient number, since it is larger than the sum of its proper divisors (151766242647184).

202111021020212 is a wasteful number, since it uses less digits than its factorization.

202111021020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26139554578 (or 26139554576 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 202111021020212 its reverse (212020120111202), we get a palindrome (414131141131414).

The spelling of 202111021020212 in words is "two hundred two trillion, one hundred eleven billion, twenty-one million, twenty thousand, two hundred twelve".