2101221010002 has 64 divisors (see below), whose sum is σ = 4292436167424. Its totient is φ = 685475681280.

The previous prime is 2101221010001. The next prime is 2101221010019. The reversal of 2101221010002 is 2000101221012.

It is a self number, because there is not a number n which added to its sum of digits gives 2101221010002.

It is not an unprimeable number, because it can be changed into a prime (2101221010001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 460085523 + ... + 460090089.

It is an arithmetic number, because the mean of its divisors is an integer number (67069315116).

Almost surely, 2^{2101221010002} is an apocalyptic number.

2101221010002 is an abundant number, since it is smaller than the sum of its proper divisors (2191215157422).

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

2101221010002 is a wasteful number, since it uses less digits than its factorization.

2101221010002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7923.

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

Adding to 2101221010002 its reverse (2000101221012), we get a palindrome (4101322231014).

The spelling of 2101221010002 in words is "two trillion, one hundred one billion, two hundred twenty-one million, ten thousand, two".