102212201212220 has 48 divisors (see below), whose sum is σ = 234338019124608. Its totient is φ = 37139635364160.

The previous prime is 102212201212213. The next prime is 102212201212223. The reversal of 102212201212220 is 22212102212201.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 102212201212192 and 102212201212201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102212201212223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177448082 + ... + 178023161.

It is an arithmetic number, because the mean of its divisors is an integer number (4882042065096).

Almost surely, 2^{102212201212220} is an apocalyptic number.

102212201212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102212201212220 is an abundant number, since it is smaller than the sum of its proper divisors (132125817912388).

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

102212201212220 is a wasteful number, since it uses less digits than its factorization.

102212201212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355472570 (or 355472568 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 102212201212220 its reverse (22212102212201), we get a palindrome (124424303424421).

The spelling of 102212201212220 in words is "one hundred two trillion, two hundred twelve billion, two hundred one million, two hundred twelve thousand, two hundred twenty".