102212002111221 has 32 divisors (see below), whose sum is σ = 152374661337600. Its totient is φ = 67715364674880.

The previous prime is 102212002111201. The next prime is 102212002111223. The reversal of 102212002111221 is 122111200212201.

102212002111221 is a `hidden beast` number, since 1 + 0 + 221 + 200 + 21 + 1 + 1 + 221 = 666.

It is not a de Polignac number, because 102212002111221 - 2⁵ = 102212002111189 is a prime.

It is a super-2 number, since 2×102212002111221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102212002111194 and 102212002111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102212002111223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15108846 + ... + 20801471.

It is an arithmetic number, because the mean of its divisors is an integer number (4761708166800).

Almost surely, 2^{102212002111221} is an apocalyptic number.

It is an amenable number.

102212002111221 is a deficient number, since it is larger than the sum of its proper divisors (50162659226379).

102212002111221 is a wasteful number, since it uses less digits than its factorization.

102212002111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35910986 (or 35910980 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 102212002111221 its reverse (122111200212201), we get a palindrome (224323202323422).

The spelling of 102212002111221 in words is "one hundred two trillion, two hundred twelve billion, two million, one hundred eleven thousand, two hundred twenty-one".