1212000102220 has 36 divisors (see below), whose sum is σ = 2703724808400. Its totient is φ = 456282389248.

The previous prime is 1212000102211. The next prime is 1212000102239. The reversal of 1212000102220 is 222010002121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212000102220.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104838520 + ... + 104850079.

It is an arithmetic number, because the mean of its divisors is an integer number (75103466900).

Almost surely, 2^{1212000102220} is an apocalyptic number.

1212000102220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212000102220 is an abundant number, since it is smaller than the sum of its proper divisors (1491724706180).

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

1212000102220 is a wasteful number, since it uses less digits than its factorization.

1212000102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209688642 (or 209688623 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1212000102220 its reverse (222010002121), we get a palindrome (1434010104341).

The spelling of 1212000102220 in words is "one trillion, two hundred twelve billion, one hundred two thousand, two hundred twenty".