12111210001020 has 96 divisors (see below), whose sum is σ = 37138938762240. Its totient is φ = 2930691744000.

The previous prime is 12111210000971. The next prime is 12111210001043. The reversal of 12111210001020 is 2010001211121.

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

It is a junction number, because it is equal to n+sod(n) for n = 12111210000987 and 12111210001005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131540356 + ... + 131632395.

It is an arithmetic number, because the mean of its divisors is an integer number (386863945440).

Almost surely, 2^{12111210001020} is an apocalyptic number.

12111210001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111210001020 is an abundant number, since it is smaller than the sum of its proper divisors (25027728761220).

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

12111210001020 is a wasteful number, since it uses less digits than its factorization.

12111210001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263172835 (or 263172833 counting only the distinct ones).

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

Adding to 12111210001020 its reverse (2010001211121), we get a palindrome (14121211212141).

The spelling of 12111210001020 in words is "twelve trillion, one hundred eleven billion, two hundred ten million, one thousand, twenty".