122121022010021 has 8 divisors (see below), whose sum is σ = 125429517310464. Its totient is φ = 118812943927440.

The previous prime is 122121022009981. The next prime is 122121022010023. The reversal of 122121022010021 is 120010220121221.

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 122121022010021 - 2⁶ = 122121022009957 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 (122121022010023) 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, 103711085 + ... + 104881986.

It is an arithmetic number, because the mean of its divisors is an integer number (15678689663808).

Almost surely, 2^{122121022010021} is an apocalyptic number.

It is an amenable number.

122121022010021 is a deficient number, since it is larger than the sum of its proper divisors (3308495300443).

122121022010021 is a wasteful number, since it uses less digits than its factorization.

122121022010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208608931.

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

Adding to 122121022010021 its reverse (120010220121221), we get a palindrome (242131242131242).

The spelling of 122121022010021 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, twenty-two million, ten thousand, twenty-one".