101121225 has 72 divisors (see below), whose sum is σ = 183220416. Its totient is φ = 49104000.

The previous prime is 101121203. The next prime is 101121247. The reversal of 101121225 is 522121101.

It is an interprime number because it is at equal distance from previous prime (101121203) and next prime (101121247).

It is not a de Polignac number, because 101121225 - 2⁶ = 101121161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1657695 + ... + 1657755.

It is an arithmetic number, because the mean of its divisors is an integer number (2544728).

Almost surely, 2^101121225 is an apocalyptic number.

101121225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

101121225 is a deficient number, since it is larger than the sum of its proper divisors (82099191).

101121225 is a wasteful number, since it uses less digits than its factorization.

101121225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 101121225 is about 10055.9049816513. The cubic root of 101121225 is about 465.8871950916.

Adding to 101121225 its reverse (522121101), we get a palindrome (623242326).

The spelling of 101121225 in words is "one hundred one million, one hundred twenty-one thousand, two hundred twenty-five".