1212131020 has 12 divisors (see below), whose sum is σ = 2545475184. Its totient is φ = 484852400.

The previous prime is 1212131017. The next prime is 1212131021. The reversal of 1212131020 is 201312121.

It is not an unprimeable number, because it can be changed into a prime (1212131021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30303256 + ... + 30303295.

It is an arithmetic number, because the mean of its divisors is an integer number (212122932).

Almost surely, 2^1212131020 is an apocalyptic number.

1212131020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212131020 is an abundant number, since it is smaller than the sum of its proper divisors (1333344164).

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

1212131020 is a wasteful number, since it uses less digits than its factorization.

1212131020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60606560 (or 60606558 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1212131020 is about 34815.6720457900. The cubic root of 1212131020 is about 1066.2274400390.

Adding to 1212131020 its reverse (201312121), we get a palindrome (1413443141).

The spelling of 1212131020 in words is "one billion, two hundred twelve million, one hundred thirty-one thousand, twenty".