122100020021 has 8 divisors (see below), whose sum is σ = 140981467200. Its totient is φ = 103578219648.

The previous prime is 122100020011. The next prime is 122100020041. The reversal of 122100020021 is 120020001221.

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 122100020021 - 2⁶ = 122100019957 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122100019984 and 122100020011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122100020011) 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, 89910971 + ... + 89912328.

It is an arithmetic number, because the mean of its divisors is an integer number (17622683400).

Almost surely, 2^122100020021 is an apocalyptic number.

It is an amenable number.

122100020021 is a deficient number, since it is larger than the sum of its proper divisors (18881447179).

122100020021 is an equidigital number, since it uses as much as digits as its factorization.

122100020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179823403.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 122100020021 its reverse (120020001221), we get a palindrome (242120021242).

The spelling of 122100020021 in words is "one hundred twenty-two billion, one hundred million, twenty thousand, twenty-one".