102222120021 has 32 divisors (see below), whose sum is σ = 156352505088. Its totient is φ = 58193372160.

The previous prime is 102222120019. The next prime is 102222120043. The reversal of 102222120021 is 120021222201.

It is not a de Polignac number, because 102222120021 - 2¹ = 102222120019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102222120071) 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, 10277911 + ... + 10287851.

It is an arithmetic number, because the mean of its divisors is an integer number (4886015784).

Almost surely, 2^102222120021 is an apocalyptic number.

It is an amenable number.

102222120021 is a deficient number, since it is larger than the sum of its proper divisors (54130385067).

102222120021 is a wasteful number, since it uses less digits than its factorization.

102222120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11741.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 102222120021 its reverse (120021222201), we get a palindrome (222243342222).

The spelling of 102222120021 in words is "one hundred two billion, two hundred twenty-two million, one hundred twenty thousand, twenty-one".