1021101102 has 36 divisors (see below), whose sum is σ = 2573593776. Its totient is φ = 291742920.

The previous prime is 1021101101. The next prime is 1021101113. The reversal of 1021101102 is 2011011201.

It is a happy number.

It is a super-2 number, since 2×1021101102² = 2085294921011228808, 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 (1021101101) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 577974 + ... + 579737.

It is an arithmetic number, because the mean of its divisors is an integer number (71488716).

Almost surely, 2^1021101102 is an apocalyptic number.

1021101102 is an abundant number, since it is smaller than the sum of its proper divisors (1552492674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021101102 is a wasteful number, since it uses less digits than its factorization.

1021101102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157733 (or 1157723 counting only the distinct ones).

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

The square root of 1021101102 is about 31954.6726160667. The cubic root of 1021101102 is about 1006.9847996504.

Adding to 1021101102 its reverse (2011011201), we get a palindrome (3032112303).

The spelling of 1021101102 in words is "one billion, twenty-one million, one hundred one thousand, one hundred two".