102201212202021 has 48 divisors (see below), whose sum is σ = 150397471224000. Its totient is φ = 66865762656000.

The previous prime is 102201212202017. The next prime is 102201212202029. The reversal of 102201212202021 is 120202212102201.

It is a happy number.

102201212202021 is a `hidden beast` number, since 1 + 0 + 220 + 1 + 21 + 220 + 202 + 1 = 666.

It is not a de Polignac number, because 102201212202021 - 2² = 102201212202017 is a prime.

It is a super-2 number, since 2×102201212202021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102201212201985 and 102201212202003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102201212202029) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 416173771 + ... + 416419271.

It is an arithmetic number, because the mean of its divisors is an integer number (3133280650500).

Almost surely, 2^{102201212202021} is an apocalyptic number.

It is an amenable number.

102201212202021 is a deficient number, since it is larger than the sum of its proper divisors (48196259021979).

102201212202021 is a wasteful number, since it uses less digits than its factorization.

102201212202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249474 (or 249471 counting only the distinct ones).

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

Adding to 102201212202021 its reverse (120202212102201), we get a palindrome (222403424304222).

The spelling of 102201212202021 in words is "one hundred two trillion, two hundred one billion, two hundred twelve million, two hundred two thousand, twenty-one".