210120022121969 has 2 divisors, whose sum is σ = 210120022121970. Its totient is φ = 210120022121968.

The previous prime is 210120022121963. The next prime is 210120022122013. The reversal of 210120022121969 is 969121220021012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112437181249600 + 97682840872369 = 10603640^2 + 9883463^2 .

It is a cyclic number.

It is not a de Polignac number, because 210120022121969 - 2¹⁶ = 210120022056433 is a prime.

It is a super-2 number, since 2×210120022121969² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (210120022121963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105060011060984 + 105060011060985.

It is an arithmetic number, because the mean of its divisors is an integer number (105060011060985).

Almost surely, 2^{210120022121969} is an apocalyptic number.

It is an amenable number.

210120022121969 is a deficient number, since it is larger than the sum of its proper divisors (1).

210120022121969 is an equidigital number, since it uses as much as digits as its factorization.

210120022121969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 38.

The spelling of 210120022121969 in words is "two hundred ten trillion, one hundred twenty billion, twenty-two million, one hundred twenty-one thousand, nine hundred sixty-nine".