101225290 has 8 divisors (see below), whose sum is σ = 182205540. Its totient is φ = 40490112.

The previous prime is 101225273. The next prime is 101225309. The reversal of 101225290 is 92522101.

It can be written as a sum of positive squares in 2 ways, for example, as 99660289 + 1565001 = 9983^2 + 1251^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5061255 + ... + 5061274.

Almost surely, 2^101225290 is an apocalyptic number.

101225290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101225290 is a deficient number, since it is larger than the sum of its proper divisors (80980250).

101225290 is a wasteful number, since it uses less digits than its factorization.

101225290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10122536.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 101225290 is about 10061.0779740543. The cubic root of 101225290 is about 466.0469568995.

Adding to 101225290 its reverse (92522101), we get a palindrome (193747391).

The spelling of 101225290 in words is "one hundred one million, two hundred twenty-five thousand, two hundred ninety".