1021125501420 has 48 divisors (see below), whose sum is σ = 2860398693600. Its totient is φ = 272181344256.

The previous prime is 1021125501377. The next prime is 1021125501559. The reversal of 1021125501420 is 241055211201.

It is a happy number.

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, 3573445 + ... + 3848604.

It is an arithmetic number, because the mean of its divisors is an integer number (59591639450).

Almost surely, 2^{1021125501420} is an apocalyptic number.

1021125501420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021125501420 is an abundant number, since it is smaller than the sum of its proper divisors (1839273192180).

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

1021125501420 is a wasteful number, since it uses less digits than its factorization.

1021125501420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7424354 (or 7424352 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The spelling of 1021125501420 in words is "one trillion, twenty-one billion, one hundred twenty-five million, five hundred one thousand, four hundred twenty".