20221002121 has 8 divisors (see below), whose sum is σ = 22101133824. Its totient is φ = 18417610560.

The previous prime is 20221002107. The next prime is 20221002143. The reversal of 20221002121 is 12120012202.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20221002121 - 2¹³ = 20220993929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20221002181) 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, 19184485 + ... + 19185538.

It is an arithmetic number, because the mean of its divisors is an integer number (2762641728).

Almost surely, 2^20221002121 is an apocalyptic number.

It is an amenable number.

20221002121 is a deficient number, since it is larger than the sum of its proper divisors (1880131703).

20221002121 is a wasteful number, since it uses less digits than its factorization.

20221002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38370071.

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

Adding to 20221002121 its reverse (12120012202), we get a palindrome (32341014323).

The spelling of 20221002121 in words is "twenty billion, two hundred twenty-one million, two thousand, one hundred twenty-one".