1212102112020 has 48 divisors (see below), whose sum is σ = 3403666623168. Its totient is φ = 322295733760.

The previous prime is 1212102112009. The next prime is 1212102112031. The reversal of 1212102112020 is 202112012121.

It is an interprime number because it is at equal distance from previous prime (1212102112009) and next prime (1212102112031).

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 15 ways as a sum of consecutive naturals, for example, 29088261 + ... + 29129900.

It is an arithmetic number, because the mean of its divisors is an integer number (70909721316).

Almost surely, 2^{1212102112020} is an apocalyptic number.

1212102112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212102112020 is an abundant number, since it is smaller than the sum of its proper divisors (2191564511148).

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

1212102112020 is a wasteful number, since it uses less digits than its factorization.

1212102112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58218520 (or 58218518 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1212102112020 its reverse (202112012121), we get a palindrome (1414214124141).

The spelling of 1212102112020 in words is "one trillion, two hundred twelve billion, one hundred two million, one hundred twelve thousand, twenty".