1231420005100 has 36 divisors (see below), whose sum is σ = 2672229943768. Its totient is φ = 492559056000.

The previous prime is 1231420005077. The next prime is 1231420005119. The reversal of 1231420005100 is 15000241321.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9738280 + ... + 9863920.

Almost surely, 2^{1231420005100} is an apocalyptic number.

1231420005100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231420005100 is an abundant number, since it is smaller than the sum of its proper divisors (1440809938668).

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

1231420005100 is a wasteful number, since it uses less digits than its factorization.

1231420005100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223666 (or 223659 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 1231420005100 its reverse (15000241321), we get a palindrome (1246420246421).

The spelling of 1231420005100 in words is "one trillion, two hundred thirty-one billion, four hundred twenty million, five thousand, one hundred".