2101220121002 has 32 divisors (see below), whose sum is σ = 3241484870400. Its totient is φ = 1021252762368.

The previous prime is 2101220120959. The next prime is 2101220121017. The reversal of 2101220121002 is 2001210221012.

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 15 ways as a sum of consecutive naturals, for example, 2402399 + ... + 3158157.

It is an arithmetic number, because the mean of its divisors is an integer number (101296402200).

Almost surely, 2^{2101220121002} is an apocalyptic number.

2101220121002 is a deficient number, since it is larger than the sum of its proper divisors (1140264749398).

2101220121002 is a wasteful number, since it uses less digits than its factorization.

2101220121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756110.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2101220121002 its reverse (2001210221012), we get a palindrome (4102430342014).

It can be divided in two parts, 2101220 and 121002, that added together give a palindrome (2222222).

The spelling of 2101220121002 in words is "two trillion, one hundred one billion, two hundred twenty million, one hundred twenty-one thousand, two".