20110021001963 has 2 divisors, whose sum is σ = 20110021001964. Its totient is φ = 20110021001962.

The previous prime is 20110021001953. The next prime is 20110021002091. The reversal of 20110021001963 is 36910012001102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20110021001963 - 2³⁴ = 20092841132779 is a prime.

It is not a weakly prime, because it can be changed into another prime (20110021001953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055010500981 + 10055010500982.

It is an arithmetic number, because the mean of its divisors is an integer number (10055010500982).

Almost surely, 2^{20110021001963} is an apocalyptic number.

20110021001963 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110021001963 is an equidigital number, since it uses as much as digits as its factorization.

20110021001963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 20110021001963 in words is "twenty trillion, one hundred ten billion, twenty-one million, one thousand, nine hundred sixty-three".