101601270 has 64 divisors (see below), whose sum is σ = 273162240. Its totient is φ = 26871264.

The previous prime is 101601211. The next prime is 101601277. The reversal of 101601270 is 72106101.

It is a super-2 number, since 2×101601270² = 20645636131225800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101601277) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32809 + ... + 35771.

It is an arithmetic number, because the mean of its divisors is an integer number (4268160).

Almost surely, 2^101601270 is an apocalyptic number.

101601270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 101601270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136581120).

101601270 is an abundant number, since it is smaller than the sum of its proper divisors (171560970).

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

101601270 is a wasteful number, since it uses less digits than its factorization.

101601270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3106 (or 3100 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 101601270 is about 10079.7455325023. The cubic root of 101601270 is about 466.6232550321.

Adding to 101601270 its reverse (72106101), we get a palindrome (173707371).

The spelling of 101601270 in words is "one hundred one million, six hundred one thousand, two hundred seventy".