102212001021 has 16 divisors (see below), whose sum is σ = 146900289536. Its totient is φ = 62842118976.

The previous prime is 102212001007. The next prime is 102212001041. The reversal of 102212001021 is 120100212201.

It is not a de Polignac number, because 102212001021 - 2⁷ = 102212000893 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102212000988 and 102212001006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102212001041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1156285 + ... + 1241538.

It is an arithmetic number, because the mean of its divisors is an integer number (9181268096).

Almost surely, 2^102212001021 is an apocalyptic number.

It is an amenable number.

102212001021 is a deficient number, since it is larger than the sum of its proper divisors (44688288515).

102212001021 is a wasteful number, since it uses less digits than its factorization.

102212001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398932.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102212001021 its reverse (120100212201), we get a palindrome (222312213222).

The spelling of 102212001021 in words is "one hundred two billion, two hundred twelve million, one thousand, twenty-one".