1213231020000 has 120 divisors (see below), whose sum is σ = 3979640588616. Its totient is φ = 323528256000.

The previous prime is 1213231019989. The next prime is 1213231020011. The reversal of 1213231020000 is 201323121.

It is an interprime number because it is at equal distance from previous prime (1213231019989) and next prime (1213231020011).

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10050259 + ... + 10170258.

Almost surely, 2^{1213231020000} is an apocalyptic number.

1213231020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213231020000 is an abundant number, since it is smaller than the sum of its proper divisors (2766409568616).

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

1213231020000 is an equidigital number, since it uses as much as digits as its factorization.

1213231020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20220550 (or 20220527 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1213231020000 its reverse (201323121), we get a palindrome (1213432343121).

The spelling of 1213231020000 in words is "one trillion, two hundred thirteen billion, two hundred thirty-one million, twenty thousand".