102210212121102 has 12 divisors (see below), whose sum is σ = 221455459595760. Its totient is φ = 34070070707028.

The previous prime is 102210212121091. The next prime is 102210212121103. The reversal of 102210212121102 is 201121212012201.

102210212121102 is a `hidden beast` number, since 10 + 221 + 0 + 212 + 121 + 102 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 5678345117839 = 102210212121102 / (1 + 0 + 2 + 2 + 1 + 0 + 2 + 1 + 2 + 1 + 2 + 1 + 1 + 0 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102210212121103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2839172558902 + ... + 2839172558937.

It is an arithmetic number, because the mean of its divisors is an integer number (18454621632980).

Almost surely, 2^{102210212121102} is an apocalyptic number.

102210212121102 is an abundant number, since it is smaller than the sum of its proper divisors (119245247474658).

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

102210212121102 is a wasteful number, since it uses less digits than its factorization.

102210212121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5678345117847 (or 5678345117844 counting only the distinct ones).

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

Adding to 102210212121102 its reverse (201121212012201), we get a palindrome (303331424133303).

The spelling of 102210212121102 in words is "one hundred two trillion, two hundred ten billion, two hundred twelve million, one hundred twenty-one thousand, one hundred two".