1212101011020 has 48 divisors (see below), whose sum is σ = 3397444253280. Its totient is φ = 322887753216.

The previous prime is 1212101010983. The next prime is 1212101011063. The reversal of 1212101011020 is 201101012121.

It is a super-2 number, since 2×1212101011020² (a number of 25 digits) contains 22 as substring.

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 = 1212101010987 and 1212101011005.

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, 10541815 + ... + 10656174.

It is an arithmetic number, because the mean of its divisors is an integer number (70780088610).

Almost surely, 2^{1212101011020} is an apocalyptic number.

1212101011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212101011020 is an abundant number, since it is smaller than the sum of its proper divisors (2185343242260).

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

1212101011020 is a wasteful number, since it uses less digits than its factorization.

1212101011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21198954 (or 21198952 counting only the distinct ones).

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

Adding to 1212101011020 its reverse (201101012121), we get a palindrome (1413202023141).

The spelling of 1212101011020 in words is "one trillion, two hundred twelve billion, one hundred one million, eleven thousand, twenty".