121122210010021 has 16 divisors (see below), whose sum is σ = 132228331992576. Its totient is φ = 110031934950000.

The previous prime is 121122210010019. The next prime is 121122210010051. The reversal of 121122210010021 is 120010012221121.

It is a cyclic number.

It is not a de Polignac number, because 121122210010021 - 2¹ = 121122210010019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121122210009977 and 121122210010004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121122210010051) 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, 213846046 + ... + 214411696.

It is an arithmetic number, because the mean of its divisors is an integer number (8264270749536).

Almost surely, 2^{121122210010021} is an apocalyptic number.

121122210010021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121122210010021 is a deficient number, since it is larger than the sum of its proper divisors (11106121982555).

121122210010021 is a wasteful number, since it uses less digits than its factorization.

121122210010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579624.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121122210010021 its reverse (120010012221121), we get a palindrome (241132222231142).

The spelling of 121122210010021 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, two hundred ten million, ten thousand, twenty-one".