20220001021 has 8 divisors (see below), whose sum is σ = 22110832800. Its totient is φ = 18337944240.

The previous prime is 20220000973. The next prime is 20220001027. The reversal of 20220001021 is 12010002202.

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

It is not a de Polignac number, because 20220001021 - 2¹⁵ = 20219968253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20220000989 and 20220001007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220001027) 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, 2188926 + ... + 2198143.

It is an arithmetic number, because the mean of its divisors is an integer number (2763854100).

Almost surely, 2^20220001021 is an apocalyptic number.

It is an amenable number.

20220001021 is a deficient number, since it is larger than the sum of its proper divisors (1890831779).

20220001021 is a wasteful number, since it uses less digits than its factorization.

20220001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4387499.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20220001021 its reverse (12010002202), we get a palindrome (32230003223).

The spelling of 20220001021 in words is "twenty billion, two hundred twenty million, one thousand, twenty-one".