20020122021 has 8 divisors (see below), whose sum is σ = 27261442944. Its totient is φ = 13062774560.

The previous prime is 20020121993. The next prime is 20020122037. The reversal of 20020122021 is 12022102002.

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 20020122021 - 2¹⁰ = 20020120997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20020121988 and 20020122006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020122071) 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, 70993200 + ... + 70993481.

It is an arithmetic number, because the mean of its divisors is an integer number (3407680368).

Almost surely, 2^20020122021 is an apocalyptic number.

It is an amenable number.

20020122021 is a deficient number, since it is larger than the sum of its proper divisors (7241320923).

20020122021 is a wasteful number, since it uses less digits than its factorization.

20020122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141986731.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20020122021 its reverse (12022102002), we get a palindrome (32042224023).

It can be divided in two parts, 200201 and 22021, that added together give a palindrome (222222).

The spelling of 20020122021 in words is "twenty billion, twenty million, one hundred twenty-two thousand, twenty-one".