2001205421052 has 48 divisors (see below), whose sum is σ = 4918190874240. Its totient is φ = 631580386752.

The previous prime is 2001205421003. The next prime is 2001205421057. The reversal of 2001205421052 is 2501245021002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001205421057) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2252563 + ... + 3012714.

It is an arithmetic number, because the mean of its divisors is an integer number (102462309880).

Almost surely, 2^{2001205421052} is an apocalyptic number.

It is an amenable number.

2001205421052 is an abundant number, since it is smaller than the sum of its proper divisors (2916985453188).

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

2001205421052 is a wasteful number, since it uses less digits than its factorization.

2001205421052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5266970 (or 5266968 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The spelling of 2001205421052 in words is "two trillion, one billion, two hundred five million, four hundred twenty-one thousand, fifty-two".