102021211111122 has 16 divisors (see below), whose sum is σ = 226713802469280. Its totient is φ = 34007070370356.

The previous prime is 102021211111121. The next prime is 102021211111133. The reversal of 102021211111122 is 221111112120201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 102021211111095 and 102021211111104.

It is not an unprimeable number, because it can be changed into a prime (102021211111121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 944640843568 + ... + 944640843675.

It is an arithmetic number, because the mean of its divisors is an integer number (14169612654330).

Almost surely, 2^{102021211111122} is an apocalyptic number.

102021211111122 is an abundant number, since it is smaller than the sum of its proper divisors (124692591358158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102021211111122 is a wasteful number, since it uses less digits than its factorization.

102021211111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889281687254 (or 1889281687248 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 102021211111122 its reverse (221111112120201), we get a palindrome (323132323231323).

The spelling of 102021211111122 in words is "one hundred two trillion, twenty-one billion, two hundred eleven million, one hundred eleven thousand, one hundred twenty-two".