122000020021 has 8 divisors (see below), whose sum is σ = 134334772704. Its totient is φ = 109872574320.

The previous prime is 122000020013. The next prime is 122000020097. The reversal of 122000020021 is 120020000221.

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 122000020021 - 2³ = 122000020013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122000020421) 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, 51825510 + ... + 51827863.

It is an arithmetic number, because the mean of its divisors is an integer number (16791846588).

Almost surely, 2^122000020021 is an apocalyptic number.

122000020021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122000020021 is a deficient number, since it is larger than the sum of its proper divisors (12334752683).

122000020021 is a wasteful number, since it uses less digits than its factorization.

122000020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103653491.

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

Adding to 122000020021 its reverse (120020000221), we get a palindrome (242020020242).

It can be divided in two parts, 1220000200 and 21, that added together give a palindrome (1220000221).

The spelling of 122000020021 in words is "one hundred twenty-two billion, twenty thousand, twenty-one".