101403021 has 16 divisors (see below), whose sum is σ = 141571584. Its totient is φ = 64438704.

The previous prime is 101403007. The next prime is 101403031. The reversal of 101403021 is 120304101.

It is a happy number.

It is not a de Polignac number, because 101403021 - 2⁵ = 101402989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101402988 and 101403006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101403031) 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, 18790 + ... + 23576.

It is an arithmetic number, because the mean of its divisors is an integer number (8848224).

Almost surely, 2^101403021 is an apocalyptic number.

It is an amenable number.

101403021 is a deficient number, since it is larger than the sum of its proper divisors (40168563).

101403021 is a wasteful number, since it uses less digits than its factorization.

101403021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5120.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 101403021 is about 10069.9067026463. The cubic root of 101403021 is about 466.3195586074.

Adding to 101403021 its reverse (120304101), we get a palindrome (221707122).

The spelling of 101403021 in words is "one hundred one million, four hundred three thousand, twenty-one".