122101122002021 has 4 divisors (see below), whose sum is σ = 122101206682092. Its totient is φ = 122101037321952.

The previous prime is 122101122002017. The next prime is 122101122002029. The reversal of 122101122002021 is 120200221101221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 93720037789921 + 28381084212100 = 9680911^2 + 5327390^2 .

It is a cyclic number.

It is not a de Polignac number, because 122101122002021 - 2² = 122101122002017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122101122002029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40139030 + ... + 43073703.

It is an arithmetic number, because the mean of its divisors is an integer number (30525301670523).

Almost surely, 2^{122101122002021} is an apocalyptic number.

It is an amenable number.

122101122002021 is a deficient number, since it is larger than the sum of its proper divisors (84680071).

122101122002021 is an equidigital number, since it uses as much as digits as its factorization.

122101122002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84680070.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 122101122002021 its reverse (120200221101221), we get a palindrome (242301343103242).

The spelling of 122101122002021 in words is "one hundred twenty-two trillion, one hundred one billion, one hundred twenty-two million, two thousand, twenty-one".