121012110222021 has 16 divisors (see below), whose sum is σ = 179326820512320. Its totient is φ = 80652411065520.

The previous prime is 121012110221969. The next prime is 121012110222067. The reversal of 121012110222021 is 120222011210121.

121012110222021 is a `hidden beast` number, since 1 + 210 + 1 + 211 + 0 + 2 + 220 + 21 = 666.

It is not a de Polignac number, because 121012110222021 - 2¹⁸ = 121012109959877 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121012110221985 and 121012110222003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121012110221021) 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, 620152935 + ... + 620348036.

It is an arithmetic number, because the mean of its divisors is an integer number (11207926282020).

Almost surely, 2^{121012110222021} is an apocalyptic number.

It is an amenable number.

121012110222021 is a deficient number, since it is larger than the sum of its proper divisors (58314710290299).

121012110222021 is a wasteful number, since it uses less digits than its factorization.

121012110222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240504593 (or 1240504587 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121012110222021 its reverse (120222011210121), we get a palindrome (241234121432142).

The spelling of 121012110222021 in words is "one hundred twenty-one trillion, twelve billion, one hundred ten million, two hundred twenty-two thousand, twenty-one".