122011110000021 has 16 divisors (see below), whose sum is σ = 178362518054400. Its totient is φ = 73574538689520.

The previous prime is 122011110000019. The next prime is 122011110000029. The reversal of 122011110000021 is 120000011110221.

It is not a de Polignac number, because 122011110000021 - 2¹ = 122011110000019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122011109999961 and 122011110000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122011110000029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9289707915 + ... + 9289721048.

It is an arithmetic number, because the mean of its divisors is an integer number (11147657378400).

Almost surely, 2^{122011110000021} is an apocalyptic number.

122011110000021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122011110000021 is a deficient number, since it is larger than the sum of its proper divisors (56351408054379).

122011110000021 is a wasteful number, since it uses less digits than its factorization.

122011110000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18579429176.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 122011110000021 its reverse (120000011110221), we get a palindrome (242011121110242).

The spelling of 122011110000021 in words is "one hundred twenty-two trillion, eleven billion, one hundred ten million, twenty-one", and thus it is an aban number.