1001211100212 has 24 divisors (see below), whose sum is σ = 2393138728512. Its totient is φ = 325597105600.

The previous prime is 1001211100193. The next prime is 1001211100231. The reversal of 1001211100212 is 2120011121001.

It is an interprime number because it is at equal distance from previous prime (1001211100193) and next prime (1001211100231).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1017490464 + ... + 1017491447.

It is an arithmetic number, because the mean of its divisors is an integer number (99714113688).

Almost surely, 2^{1001211100212} is an apocalyptic number.

1001211100212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1001211100212 is an abundant number, since it is smaller than the sum of its proper divisors (1391927628300).

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

1001211100212 is a wasteful number, since it uses less digits than its factorization.

1001211100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2034981959 (or 2034981957 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1001211100212 its reverse (2120011121001), we get a palindrome (3121222221213).

The spelling of 1001211100212 in words is "one trillion, one billion, two hundred eleven million, one hundred thousand, two hundred twelve".