101211123 has 8 divisors (see below), whose sum is σ = 145328848. Its totient is φ = 62283744.

The previous prime is 101211059. The next prime is 101211151. The reversal of 101211123 is 321112101.

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

It is not a de Polignac number, because 101211123 - 2⁶ = 101211059 is a prime.

It is a super-2 number, since 2×101211123² = 20487382837842258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101211099 and 101211108.

It is not an unprimeable number, because it can be changed into a prime (101211823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1297540 + ... + 1297617.

It is an arithmetic number, because the mean of its divisors is an integer number (18166106).

Almost surely, 2^101211123 is an apocalyptic number.

101211123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

101211123 is a deficient number, since it is larger than the sum of its proper divisors (44117725).

101211123 is a wasteful number, since it uses less digits than its factorization.

101211123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595173.

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

The square root of 101211123 is about 10060.3738996123. The cubic root of 101211123 is about 466.0252139955.

Adding to 101211123 its reverse (321112101), we get a palindrome (422323224).

The spelling of 101211123 in words is "one hundred one million, two hundred eleven thousand, one hundred twenty-three".