1010110101021 has 32 divisors (see below), whose sum is σ = 1710303724800. Its totient is φ = 577184037120.

The previous prime is 1010110100981. The next prime is 1010110101041. The reversal of 1010110101021 is 1201010110101.

It is not a de Polignac number, because 1010110101021 - 2⁹ = 1010110100509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1010110100994 and 1010110101012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010110101041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5865025 + ... + 6034793.

It is an arithmetic number, because the mean of its divisors is an integer number (53446991400).

Almost surely, 2^{1010110101021} is an apocalyptic number.

It is an amenable number.

1010110101021 is a deficient number, since it is larger than the sum of its proper divisors (700193623779).

1010110101021 is a wasteful number, since it uses less digits than its factorization.

1010110101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201266 (or 201260 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 1010110101021 its reverse (1201010110101), we get a palindrome (2211120211122).

The spelling of 1010110101021 in words is "one trillion, ten billion, one hundred ten million, one hundred one thousand, twenty-one".