1210220023212 has 108 divisors (see below), whose sum is σ = 3210983586720. Its totient is φ = 384151911552.

The previous prime is 1210220023211. The next prime is 1210220023223. The reversal of 1210220023212 is 2123200220121.

1210220023212 is a `hidden beast` number, since 1 + 210 + 220 + 0 + 23 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1210220023211) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2055114 + ... + 2577582.

Almost surely, 2^{1210220023212} is an apocalyptic number.

1210220023212 is a gapful number since it is divisible by the number (12) 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 1210220023212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1605491793360).

1210220023212 is an abundant number, since it is smaller than the sum of its proper divisors (2000763563508).

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

1210220023212 is a wasteful number, since it uses less digits than its factorization.

1210220023212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522600 (or 522558 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1210220023212 its reverse (2123200220121), we get a palindrome (3333420243333).

The spelling of 1210220023212 in words is "one trillion, two hundred ten billion, two hundred twenty million, twenty-three thousand, two hundred twelve".