101211320 has 32 divisors (see below), whose sum is σ = 260258400. Its totient is φ = 34700928.

The previous prime is 101211307. The next prime is 101211343. The reversal of 101211320 is 23112101.

It is a super-2 number, since 2×101211320² = 20487462592284800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180455 + ... + 181014.

It is an arithmetic number, because the mean of its divisors is an integer number (8133075).

Almost surely, 2^101211320 is an apocalyptic number.

101211320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101211320 is an abundant number, since it is smaller than the sum of its proper divisors (159047080).

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

101211320 is a wasteful number, since it uses less digits than its factorization.

101211320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361487 (or 361483 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 101211320 is about 10060.3836904961. The cubic root of 101211320 is about 466.0255163565.

Adding to 101211320 its reverse (23112101), we get a palindrome (124323421).

The spelling of 101211320 in words is "one hundred one million, two hundred eleven thousand, three hundred twenty".