21101221202059 has 2 divisors, whose sum is σ = 21101221202060. Its totient is φ = 21101221202058.

The previous prime is 21101221201987. The next prime is 21101221202129. The reversal of 21101221202059 is 95020212210112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21101221202059 - 2⁹ = 21101221201547 is a prime.

It is not a weakly prime, because it can be changed into another prime (21101221202359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550610601029 + 10550610601030.

It is an arithmetic number, because the mean of its divisors is an integer number (10550610601030).

Almost surely, 2^{21101221202059} is an apocalyptic number.

21101221202059 is a deficient number, since it is larger than the sum of its proper divisors (1).

21101221202059 is an equidigital number, since it uses as much as digits as its factorization.

21101221202059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 28.

The spelling of 21101221202059 in words is "twenty-one trillion, one hundred one billion, two hundred twenty-one million, two hundred two thousand, fifty-nine".