2101220021010 has 64 divisors (see below), whose sum is σ = 5501627495424. Its totient is φ = 509363390400.

The previous prime is 2101220020957. The next prime is 2101220021023. The reversal of 2101220021010 is 101200221012.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7730637 + ... + 7997823.

It is an arithmetic number, because the mean of its divisors is an integer number (85962929616).

Almost surely, 2^{2101220021010} is an apocalyptic number.

2101220021010 is an abundant number, since it is smaller than the sum of its proper divisors (3400407474414).

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

2101220021010 is a wasteful number, since it uses less digits than its factorization.

2101220021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291039.

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

Adding to 2101220021010 its reverse (101200221012), we get a palindrome (2202420242022).

The spelling of 2101220021010 in words is "two trillion, one hundred one billion, two hundred twenty million, twenty-one thousand, ten".