1021402124120 has 64 divisors (see below), whose sum is σ = 2626577971200. Its totient is φ = 350179632000.

The previous prime is 1021402124117. The next prime is 1021402124159. The reversal of 1021402124120 is 214212041201.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1021402124092 and 1021402124101.

It is a congruent 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, 7627745 + ... + 7760495.

It is an arithmetic number, because the mean of its divisors is an integer number (41040280800).

Almost surely, 2^{1021402124120} is an apocalyptic number.

1021402124120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021402124120 is an abundant number, since it is smaller than the sum of its proper divisors (1605175847080).

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

1021402124120 is a wasteful number, since it uses less digits than its factorization.

1021402124120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160248 (or 160244 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1021402124120 its reverse (214212041201), we get a palindrome (1235614165321).

The spelling of 1021402124120 in words is "one trillion, twenty-one billion, four hundred two million, one hundred twenty-four thousand, one hundred twenty".