100021010121091 has 2 divisors, whose sum is σ = 100021010121092. Its totient is φ = 100021010121090.

The previous prime is 100021010121079. The next prime is 100021010121103. The reversal of 100021010121091 is 190121010120001.

It is a balanced prime because it is at equal distance from previous prime (100021010121079) and next prime (100021010121103).

It is a cyclic number.

It is not a de Polignac number, because 100021010121091 - 2¹³ = 100021010112899 is a prime.

It is not a weakly prime, because it can be changed into another prime (100021010121041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50010505060545 + 50010505060546.

It is an arithmetic number, because the mean of its divisors is an integer number (50010505060546).

Almost surely, 2^{100021010121091} is an apocalyptic number.

100021010121091 is a deficient number, since it is larger than the sum of its proper divisors (1).

100021010121091 is an equidigital number, since it uses as much as digits as its factorization.

100021010121091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 19.

Adding to 100021010121091 its reverse (190121010120001), we get a palindrome (290142020241092).

The spelling of 100021010121091 in words is "one hundred trillion, twenty-one billion, ten million, one hundred twenty-one thousand, ninety-one".