101022020002091 has 4 divisors (see below), whose sum is σ = 101022791370072. Its totient is φ = 101021248634112.

The previous prime is 101022020002073. The next prime is 101022020002109. The reversal of 101022020002091 is 190200020220101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (101022020002073) and next prime (101022020002109).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101022020002091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101022020002031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385487510 + ... + 385749483.

It is an arithmetic number, because the mean of its divisors is an integer number (25255697842518).

Almost surely, 2^{101022020002091} is an apocalyptic number.

101022020002091 is a deficient number, since it is larger than the sum of its proper divisors (771367981).

101022020002091 is an equidigital number, since it uses as much as digits as its factorization.

101022020002091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771367980.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 101022020002091 its reverse (190200020220101), we get a palindrome (291222040222192).

The spelling of 101022020002091 in words is "one hundred one trillion, twenty-two billion, twenty million, two thousand, ninety-one".