102212121122020 has 192 divisors, whose sum is σ = 279923701478400. Its totient is φ = 30423317004288.

The previous prime is 102212121121919. The next prime is 102212121122021. The reversal of 102212121122020 is 20221121212201.

It is not an unprimeable number, because it can be changed into a prime (102212121122021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 41086656 + ... + 43503304.

It is an arithmetic number, because the mean of its divisors is an integer number (1457935945200).

Almost surely, 2^{102212121122020} is an apocalyptic number.

102212121122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102212121122020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139961850739200).

102212121122020 is an abundant number, since it is smaller than the sum of its proper divisors (177711580356380).

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

102212121122020 is a wasteful number, since it uses less digits than its factorization.

102212121122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2418062 (or 2418060 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 102212121122020 its reverse (20221121212201), we get a palindrome (122433242334221).

The spelling of 102212121122020 in words is "one hundred two trillion, two hundred twelve billion, one hundred twenty-one million, one hundred twenty-two thousand, twenty".