20202121101 has 32 divisors (see below), whose sum is σ = 28620135936. Its totient is φ = 12657600000.

The previous prime is 20202121099. The next prime is 20202121117. The reversal of 20202121101 is 10112120202.

It is not a de Polignac number, because 20202121101 - 2¹ = 20202121099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202123101) 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, 437676 + ... + 481626.

It is an arithmetic number, because the mean of its divisors is an integer number (894379248).

Almost surely, 2^20202121101 is an apocalyptic number.

It is an amenable number.

20202121101 is a deficient number, since it is larger than the sum of its proper divisors (8418014835).

20202121101 is a wasteful number, since it uses less digits than its factorization.

20202121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44133.

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

Adding to 20202121101 its reverse (10112120202), we get a palindrome (30314241303).

The spelling of 20202121101 in words is "twenty billion, two hundred two million, one hundred twenty-one thousand, one hundred one".