2001012021002 has 32 divisors (see below), whose sum is σ = 3179025100800. Its totient is φ = 941992452288.

The previous prime is 2001012020999. The next prime is 2001012021103. The reversal of 2001012021002 is 2001202101002.

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, 16750199 + ... + 16869237.

It is an arithmetic number, because the mean of its divisors is an integer number (99344534400).

Almost surely, 2^{2001012021002} is an apocalyptic number.

2001012021002 is a deficient number, since it is larger than the sum of its proper divisors (1178013079798).

2001012021002 is a wasteful number, since it uses less digits than its factorization.

2001012021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121790.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2001012021002 its reverse (2001202101002), we get a palindrome (4002214122004).

The spelling of 2001012021002 in words is "two trillion, one billion, twelve million, twenty-one thousand, two".