101111010002021 has 8 divisors (see below), whose sum is σ = 101157753840120. Its totient is φ = 101064267548608.

The previous prime is 101111010001979. The next prime is 101111010002027. The reversal of 101111010002021 is 120200010111101.

It can be written as a sum of positive squares in 4 ways, for example, as 12447807141025 + 88663202860996 = 3528145^2 + 9416114^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101111010002021 - 2⁶ = 101111010001957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101111010001993 and 101111010002011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101111010002027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163612235 + ... + 164229063.

It is an arithmetic number, because the mean of its divisors is an integer number (12644719230015).

Almost surely, 2^{101111010002021} is an apocalyptic number.

It is an amenable number.

101111010002021 is a deficient number, since it is larger than the sum of its proper divisors (46743838099).

101111010002021 is an equidigital number, since it uses as much as digits as its factorization.

101111010002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692343.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 101111010002021 its reverse (120200010111101), we get a palindrome (221311020113122).

The spelling of 101111010002021 in words is "one hundred one trillion, one hundred eleven billion, ten million, two thousand, twenty-one".