1020121410402 has 12 divisors (see below), whose sum is σ = 2210263055910. Its totient is φ = 340040470128.

The previous prime is 1020121410397. The next prime is 1020121410421. The reversal of 1020121410402 is 2040141210201.

1020121410402 is a `hidden beast` number, since 1 + 0 + 201 + 21 + 41 + 0 + 402 = 666.

It can be written as a sum of positive squares in only one way, i.e., 735788243961 + 284333166441 = 857781^2 + 533229^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 56673411689 = 1020121410402 / (1 + 0 + 2 + 0 + 1 + 2 + 1 + 4 + 1 + 0 + 4 + 0 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28336705827 + ... + 28336705862.

Almost surely, 2^{1020121410402} is an apocalyptic number.

1020121410402 is an abundant number, since it is smaller than the sum of its proper divisors (1190141645508).

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

1020121410402 is a wasteful number, since it uses less digits than its factorization.

1020121410402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56673411697 (or 56673411694 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1020121410402 its reverse (2040141210201), we get a palindrome (3060262620603).

The spelling of 1020121410402 in words is "one trillion, twenty billion, one hundred twenty-one million, four hundred ten thousand, four hundred two".