1211231310020 has 24 divisors (see below), whose sum is σ = 2551871059584. Its totient is φ = 482914370016.

The previous prime is 1211231310019. The next prime is 1211231310049. The reversal of 1211231310020 is 200131321121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98628332 + ... + 98640611.

It is an arithmetic number, because the mean of its divisors is an integer number (106327960816).

Almost surely, 2^{1211231310020} is an apocalyptic number.

1211231310020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211231310020 is an abundant number, since it is smaller than the sum of its proper divisors (1340639749564).

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

1211231310020 is a wasteful number, since it uses less digits than its factorization.

1211231310020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197269259 (or 197269257 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1211231310020 its reverse (200131321121), we get a palindrome (1411362631141).

It can be divided in two parts, 1211231 and 310020, that added together give a palindrome (1521251).

The spelling of 1211231310020 in words is "one trillion, two hundred eleven billion, two hundred thirty-one million, three hundred ten thousand, twenty".