2111020001969 has 2 divisors, whose sum is σ = 2111020001970. Its totient is φ = 2111020001968.

The previous prime is 2111020001953. The next prime is 2111020002031. The reversal of 2111020001969 is 9691000201112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1653654543025 + 457365458944 = 1285945^2 + 676288^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111020001969 - 2⁴ = 2111020001953 is a prime.

It is a super-2 number, since 2×2111020001969² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2111020501969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055510000984 + 1055510000985.

It is an arithmetic number, because the mean of its divisors is an integer number (1055510000985).

Almost surely, 2^{2111020001969} is an apocalyptic number.

It is an amenable number.

2111020001969 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111020001969 is an equidigital number, since it uses as much as digits as its factorization.

2111020001969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 32.

The spelling of 2111020001969 in words is "two trillion, one hundred eleven billion, twenty million, one thousand, nine hundred sixty-nine".