1021102101 has 12 divisors (see below), whose sum is σ = 1475222112. Its totient is φ = 680597736.

The previous prime is 1021102079. The next prime is 1021102109. The reversal of 1021102101 is 1012011201.

It is a happy number.

1021102101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1021102101 - 2²⁵ = 987547669 is a prime.

It is a super-2 number, since 2×1021102101² = 2085299001333228402, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021102109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58000 + ... + 73526.

It is an arithmetic number, because the mean of its divisors is an integer number (122935176).

Almost surely, 2^1021102101 is an apocalyptic number.

It is an amenable number.

1021102101 is a deficient number, since it is larger than the sum of its proper divisors (454120011).

1021102101 is a wasteful number, since it uses less digits than its factorization.

1021102101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22840 (or 22837 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1021102101 is about 31954.6882475796. The cubic root of 1021102101 is about 1006.9851280467.

Adding to 1021102101 its reverse (1012011201), we get a palindrome (2033113302).

The spelling of 1021102101 in words is "one billion, twenty-one million, one hundred two thousand, one hundred one".