21100120201010 has 32 divisors (see below), whose sum is σ = 38107939665600. Its totient is φ = 8411682502080.

The previous prime is 21100120201009. The next prime is 21100120201037. The reversal of 21100120201010 is 1010202100112.

It is a junction number, because it is equal to n+sod(n) for n = 21100120200982 and 21100120201000.

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, 8643596 + ... + 10812584.

It is an arithmetic number, because the mean of its divisors is an integer number (1190873114550).

Almost surely, 2^{21100120201010} is an apocalyptic number.

21100120201010 is a deficient number, since it is larger than the sum of its proper divisors (17007819464590).

21100120201010 is a wasteful number, since it uses less digits than its factorization.

21100120201010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172266.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21100120201010 its reverse (1010202100112), we get a palindrome (22110322301122).

The spelling of 21100120201010 in words is "twenty-one trillion, one hundred billion, one hundred twenty million, two hundred one thousand, ten".