122002011021 has 16 divisors (see below), whose sum is σ = 178098124608. Its totient is φ = 73673673600.

The previous prime is 122002011017. The next prime is 122002011073. The reversal of 122002011021 is 120110200221.

It is not a de Polignac number, because 122002011021 - 2² = 122002011017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122002010988 and 122002011006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122002012021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6664200 + ... + 6682481.

It is an arithmetic number, because the mean of its divisors is an integer number (11131132788).

Almost surely, 2^122002011021 is an apocalyptic number.

122002011021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122002011021 is a deficient number, since it is larger than the sum of its proper divisors (56096113587).

122002011021 is a wasteful number, since it uses less digits than its factorization.

122002011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13346972.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 122002011021 its reverse (120110200221), we get a palindrome (242112211242).

The spelling of 122002011021 in words is "one hundred twenty-two billion, two million, eleven thousand, twenty-one".