102212111022021 has 144 divisors (see below), whose sum is σ = 202458031251840. Its totient is φ = 48845512477440.

The previous prime is 102212111022019. The next prime is 102212111022023. The reversal of 102212111022021 is 120220111212201.

102212111022021 is a `hidden beast` number, since 1 + 0 + 221 + 211 + 10 + 220 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (102212111022019) and next prime (102212111022023).

It is not a de Polignac number, because 102212111022021 - 2¹ = 102212111022019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102212111021985 and 102212111022003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102212111022023) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 15711600 + ... + 21243318.

It is an arithmetic number, because the mean of its divisors is an integer number (1405958550360).

Almost surely, 2^{102212111022021} is an apocalyptic number.

102212111022021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102212111022021 is a deficient number, since it is larger than the sum of its proper divisors (100245920229819).

102212111022021 is a wasteful number, since it uses less digits than its factorization.

102212111022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5532056 (or 5532046 counting only the distinct ones).

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

Adding to 102212111022021 its reverse (120220111212201), we get a palindrome (222432222234222).

The spelling of 102212111022021 in words is "one hundred two trillion, two hundred twelve billion, one hundred eleven million, twenty-two thousand, twenty-one".