20010102201121 has 16 divisors (see below), whose sum is σ = 21335141836800. Its totient is φ = 18723393811408.

The previous prime is 20010102201113. The next prime is 20010102201127. The reversal of 20010102201121 is 12110220101002.

It is not a de Polignac number, because 20010102201121 - 2³ = 20010102201113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20010102201127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2537491 + ... + 6816088.

It is an arithmetic number, because the mean of its divisors is an integer number (1333446364800).

Almost surely, 2^{20010102201121} is an apocalyptic number.

It is an amenable number.

20010102201121 is a deficient number, since it is larger than the sum of its proper divisors (1325039635679).

20010102201121 is a wasteful number, since it uses less digits than its factorization.

20010102201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9355628.

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

Adding to 20010102201121 its reverse (12110220101002), we get a palindrome (32120322302123).

The spelling of 20010102201121 in words is "twenty trillion, ten billion, one hundred two million, two hundred one thousand, one hundred twenty-one".