1213140020 has 24 divisors (see below), whose sum is σ = 2548270368. Its totient is φ = 485127200.

The previous prime is 1213140017. The next prime is 1213140029. The reversal of 1213140020 is 200413121.

It is a junction number, because it is equal to n+sod(n) for n = 1213139977 and 1213140004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213140029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115175 + ... + 125265.

It is an arithmetic number, because the mean of its divisors is an integer number (106177932).

Almost surely, 2^1213140020 is an apocalyptic number.

1213140020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213140020 is an abundant number, since it is smaller than the sum of its proper divisors (1335130348).

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

1213140020 is a wasteful number, since it uses less digits than its factorization.

1213140020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16111 (or 16109 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1213140020 is about 34830.1596321349. The cubic root of 1213140020 is about 1066.5232070520.

Adding to 1213140020 its reverse (200413121), we get a palindrome (1413553141).

The spelling of 1213140020 in words is "one billion, two hundred thirteen million, one hundred forty thousand, twenty".