1021121020002 has 16 divisors (see below), whose sum is σ = 2108120815872. Its totient is φ = 329393877360.

The previous prime is 1021121019979. The next prime is 1021121020027. The reversal of 1021121020002 is 2000201211201.

It is a self number, because there is not a number n which added to its sum of digits gives 1021121020002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2744948793 + ... + 2744949164.

It is an arithmetic number, because the mean of its divisors is an integer number (131757550992).

Almost surely, 2^{1021121020002} is an apocalyptic number.

1021121020002 is an abundant number, since it is smaller than the sum of its proper divisors (1086999795870).

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

1021121020002 is a wasteful number, since it uses less digits than its factorization.

1021121020002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5489897993.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1021121020002 its reverse (2000201211201), we get a palindrome (3021322231203).

The spelling of 1021121020002 in words is "one trillion, twenty-one billion, one hundred twenty-one million, twenty thousand, two".