1210020001212 has 96 divisors (see below), whose sum is σ = 3272375070720. Its totient is φ = 344460453120.

The previous prime is 1210020001171. The next prime is 1210020001213. The reversal of 1210020001212 is 2121000200121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210020001213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4129948 + ... + 4413219.

It is an arithmetic number, because the mean of its divisors is an integer number (34087240320).

Almost surely, 2^{1210020001212} is an apocalyptic number.

1210020001212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1210020001212 is an abundant number, since it is smaller than the sum of its proper divisors (2062355069508).

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

1210020001212 is a wasteful number, since it uses less digits than its factorization.

1210020001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8543251 (or 8543249 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1210020001212 its reverse (2121000200121), we get a palindrome (3331020201333).

The spelling of 1210020001212 in words is "one trillion, two hundred ten billion, twenty million, one thousand, two hundred twelve".