20110202100121 has 32 divisors (see below), whose sum is σ = 24464436756480. Its totient is φ = 16137102009600.

The previous prime is 20110202100103. The next prime is 20110202100143. The reversal of 20110202100121 is 12100120201102.

It is a cyclic number.

It is not a de Polignac number, because 20110202100121 - 2⁷ = 20110202099993 is a prime.

It is a super-2 number, since 2×20110202100121² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20110202100151) 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, 356339776 + ... + 356396206.

It is an arithmetic number, because the mean of its divisors is an integer number (764513648640).

Almost surely, 2^{20110202100121} is an apocalyptic number.

It is an amenable number.

20110202100121 is a deficient number, since it is larger than the sum of its proper divisors (4354234656359).

20110202100121 is a wasteful number, since it uses less digits than its factorization.

20110202100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72325.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20110202100121 its reverse (12100120201102), we get a palindrome (32210322301223).

The spelling of 20110202100121 in words is "twenty trillion, one hundred ten billion, two hundred two million, one hundred thousand, one hundred twenty-one".