101120000021 has 4 divisors (see below), whose sum is σ = 101284959852. Its totient is φ = 100955040192.

The previous prime is 101119999969. The next prime is 101120000027. The reversal of 101120000021 is 120000021101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120000021101 = 48661 ⋅2466041.

It can be written as a sum of positive squares in 2 ways, for example, as 8756280625 + 92363719396 = 93575^2 + 303914^2 .

It is a cyclic number.

It is not a de Polignac number, because 101120000021 - 2⁶ = 101119999957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101119999963 and 101120000008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101120000027) 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, 82478996 + ... + 82480221.

It is an arithmetic number, because the mean of its divisors is an integer number (25321239963).

Almost surely, 2^101120000021 is an apocalyptic number.

It is an amenable number.

101120000021 is a deficient number, since it is larger than the sum of its proper divisors (164959831).

101120000021 is an equidigital number, since it uses as much as digits as its factorization.

101120000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164959830.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 101120000021 its reverse (120000021101), we get a palindrome (221120021122).

It can be divided in two parts, 101 and 120000021, that multiplied together give a palindrome (12120002121).

The spelling of 101120000021 in words is "one hundred one billion, one hundred twenty million, twenty-one", and thus it is an aban number.