101030121 has 12 divisors (see below), whose sum is σ = 146082820. Its totient is φ = 67284000.

The previous prime is 101030117. The next prime is 101030131. The reversal of 101030121 is 121030101.

It can be written as a sum of positive squares in 2 ways, for example, as 38303721 + 62726400 = 6189^2 + 7920^2 .

It is not a de Polignac number, because 101030121 - 2² = 101030117 is a prime.

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

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101030101) 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, 4371 + ... + 14871.

Almost surely, 2^101030121 is an apocalyptic number.

It is an amenable number.

101030121 is a deficient number, since it is larger than the sum of its proper divisors (45052699).

101030121 is a wasteful number, since it uses less digits than its factorization.

101030121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11576 (or 11573 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 101030121 is about 10051.3740851687. The cubic root of 101030121 is about 465.7472411570.

Adding to 101030121 its reverse (121030101), we get a palindrome (222060222).

The spelling of 101030121 in words is "one hundred one million, thirty thousand, one hundred twenty-one".