202122010111021 has 384 divisors, whose sum is σ = 304249651200000. Its totient is φ = 129821495731200.

The previous prime is 202122010111009. The next prime is 202122010111031. The reversal of 202122010111021 is 120111010221202.

It is not a de Polignac number, because 202122010111021 - 2¹³ = 202122010102829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202122010110986 and 202122010111004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202122010111031) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 164460544635 + ... + 164460545863.

It is an arithmetic number, because the mean of its divisors is an integer number (792316800000).

Almost surely, 2^{202122010111021} is an apocalyptic number.

It is an amenable number.

202122010111021 is a deficient number, since it is larger than the sum of its proper divisors (102127641088979).

202122010111021 is a wasteful number, since it uses less digits than its factorization.

202122010111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865 (or 1852 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 202122010111021 its reverse (120111010221202), we get a palindrome (322233020332223).

The spelling of 202122010111021 in words is "two hundred two trillion, one hundred twenty-two billion, ten million, one hundred eleven thousand, twenty-one".