2001402044252 has 12 divisors (see below), whose sum is σ = 3771873083496. Its totient is φ = 923724020400.

The previous prime is 2001402044251. The next prime is 2001402044261. The reversal of 2001402044252 is 2524402041002.

It is a super-2 number, since 2×2001402044252² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001402044251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19244250374 + ... + 19244250477.

It is an arithmetic number, because the mean of its divisors is an integer number (314322756958).

Almost surely, 2^{2001402044252} is an apocalyptic number.

It is an amenable number.

2001402044252 is a deficient number, since it is larger than the sum of its proper divisors (1770471039244).

2001402044252 is a wasteful number, since it uses less digits than its factorization.

2001402044252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38488500868 (or 38488500866 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 2001402044252 its reverse (2524402041002), we get a palindrome (4525804085254).

The spelling of 2001402044252 in words is "two trillion, one billion, four hundred two million, forty-four thousand, two hundred fifty-two".