101026440102 has 32 divisors (see below), whose sum is σ = 243071136000. Its totient is φ = 27345502368.

The previous prime is 101026440043. The next prime is 101026440103. The reversal of 101026440102 is 201044620101.

It is a happy number.

It is a super-3 number, since 3×101026440102³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101026440103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63298977 + ... + 63300572.

It is an arithmetic number, because the mean of its divisors is an integer number (7595973000).

Almost surely, 2^101026440102 is an apocalyptic number.

101026440102 is an abundant number, since it is smaller than the sum of its proper divisors (142044695898).

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

101026440102 is a wasteful number, since it uses less digits than its factorization.

101026440102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126599580.

The product of its (nonzero) digits is 384, while the sum is 21.

The spelling of 101026440102 in words is "one hundred one billion, twenty-six million, four hundred forty thousand, one hundred two".