20210220101121 has 8 divisors (see below), whose sum is σ = 27022021306560. Its totient is φ = 13435949481552.

The previous prime is 20210220101083. The next prime is 20210220101153. The reversal of 20210220101121 is 12110102201202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20210220101121 - 2³⁵ = 20175860362753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20210220101121.

It is not an unprimeable number, because it can be changed into a prime (20210220171121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9382645210 + ... + 9382647363.

It is an arithmetic number, because the mean of its divisors is an integer number (3377752663320).

Almost surely, 2^{20210220101121} is an apocalyptic number.

It is an amenable number.

20210220101121 is a deficient number, since it is larger than the sum of its proper divisors (6811801205439).

20210220101121 is a wasteful number, since it uses less digits than its factorization.

20210220101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18765292935.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20210220101121 its reverse (12110102201202), we get a palindrome (32320322302323).

The spelling of 20210220101121 in words is "twenty trillion, two hundred ten billion, two hundred twenty million, one hundred one thousand, one hundred twenty-one".