122002020021 has 32 divisors (see below), whose sum is σ = 196870452480. Its totient is φ = 65605579776.

The previous prime is 122002020013. The next prime is 122002020037. The reversal of 122002020021 is 120020200221.

It is not a de Polignac number, because 122002020021 - 2³ = 122002020013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122002019979 and 122002020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122002020001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3233155 + ... + 3270671.

It is an arithmetic number, because the mean of its divisors is an integer number (6152201640).

Almost surely, 2^122002020021 is an apocalyptic number.

It is an amenable number.

122002020021 is a deficient number, since it is larger than the sum of its proper divisors (74868432459).

122002020021 is a wasteful number, since it uses less digits than its factorization.

122002020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46653.

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

Adding to 122002020021 its reverse (120020200221), we get a palindrome (242022220242).

It can be divided in two parts, 1 and 22002020021, that added together give a palindrome (22002020022).

The spelling of 122002020021 in words is "one hundred twenty-two billion, two million, twenty thousand, twenty-one".