122111002011021 has 8 divisors (see below), whose sum is σ = 162817752761664. Its totient is φ = 81405792967200.

The previous prime is 122111002011001. The next prime is 122111002011041. The reversal of 122111002011021 is 120110200111221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (122111002011001) and next prime (122111002011041).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122111002011021 - 2¹⁸ = 122111001748877 is a prime.

It is a super-2 number, since 2×122111002011021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122111002011001) 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, 385241880 + ... + 385558721.

It is an arithmetic number, because the mean of its divisors is an integer number (20352219095208).

Almost surely, 2^{122111002011021} is an apocalyptic number.

It is an amenable number.

122111002011021 is a deficient number, since it is larger than the sum of its proper divisors (40706750750643).

122111002011021 is an equidigital number, since it uses as much as digits as its factorization.

122111002011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770853411.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 122111002011021 its reverse (120110200111221), we get a palindrome (242221202122242).

The spelling of 122111002011021 in words is "one hundred twenty-two trillion, one hundred eleven billion, two million, eleven thousand, twenty-one".