20220210121 has 4 divisors (see below), whose sum is σ = 20230337412. Its totient is φ = 20210082832.

The previous prime is 20220210097. The next prime is 20220210173. The reversal of 20220210121 is 12101202202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11623211721 + 8596998400 = 107811^2 + 92720^2 .

It is a cyclic number.

It is not a de Polignac number, because 20220210121 - 2⁹ = 20220209609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20220210181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5060650 + ... + 5064643.

It is an arithmetic number, because the mean of its divisors is an integer number (5057584353).

Almost surely, 2^20220210121 is an apocalyptic number.

It is an amenable number.

20220210121 is a deficient number, since it is larger than the sum of its proper divisors (10127291).

20220210121 is a wasteful number, since it uses less digits than its factorization.

20220210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10127290.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20220210121 its reverse (12101202202), we get a palindrome (32321412323).

The spelling of 20220210121 in words is "twenty billion, two hundred twenty million, two hundred ten thousand, one hundred twenty-one".