101211045 has 16 divisors (see below), whose sum is σ = 174394752. Its totient is φ = 49826880.

The previous prime is 101211041. The next prime is 101211053. The reversal of 101211045 is 540112101.

It is a happy number.

It is not a de Polignac number, because 101211045 - 2² = 101211041 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101211041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259321 + ... + 259710.

It is an arithmetic number, because the mean of its divisors is an integer number (10899672).

Almost surely, 2^101211045 is an apocalyptic number.

101211045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

101211045 is a deficient number, since it is larger than the sum of its proper divisors (73183707).

101211045 is a wasteful number, since it uses less digits than its factorization.

101211045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519052.

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

The square root of 101211045 is about 10060.3700230161. The cubic root of 101211045 is about 466.0250942788.

Adding to 101211045 its reverse (540112101), we get a palindrome (641323146).

The spelling of 101211045 in words is "one hundred one million, two hundred eleven thousand, forty-five".