102012220221111 has 48 divisors (see below), whose sum is σ = 158054544583104. Its totient is φ = 63236459607552.

The previous prime is 102012220221101. The next prime is 102012220221133. The reversal of 102012220221111 is 111122022210201.

102012220221111 is a `hidden beast` number, since 10 + 201 + 2 + 220 + 221 + 1 + 11 = 666.

It is not a de Polignac number, because 102012220221111 - 2²² = 102012216026807 is a prime.

It is a super-4 number, since 4×102012220221111⁴ (a number of 57 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102012220221101) 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, 2593035 + ... + 14517171.

It is an arithmetic number, because the mean of its divisors is an integer number (3292803012148).

Almost surely, 2^{102012220221111} is an apocalyptic number.

102012220221111 is a deficient number, since it is larger than the sum of its proper divisors (56042324361993).

102012220221111 is a wasteful number, since it uses less digits than its factorization.

102012220221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11925320 (or 11925317 counting only the distinct ones).

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

Adding to 102012220221111 its reverse (111122022210201), we get a palindrome (213134242431312).

The spelling of 102012220221111 in words is "one hundred two trillion, twelve billion, two hundred twenty million, two hundred twenty-one thousand, one hundred eleven".