101223144 has 48 divisors (see below), whose sum is σ = 299070720. Its totient is φ = 30673440.

The previous prime is 101223121. The next prime is 101223179. The reversal of 101223144 is 441322101.

It is a super-2 number, since 2×101223144² = 20492249762489472, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63112 + ... + 64695.

It is an arithmetic number, because the mean of its divisors is an integer number (6230640).

Almost surely, 2^101223144 is an apocalyptic number.

It is an amenable number.

101223144 is an abundant number, since it is smaller than the sum of its proper divisors (197847576).

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

101223144 is a wasteful number, since it uses less digits than its factorization.

101223144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127830 (or 127823 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 101223144 is about 10060.9713248771. The cubic root of 101223144 is about 466.0436634411.

Adding to 101223144 its reverse (441322101), we get a palindrome (542545245).

The spelling of 101223144 in words is "one hundred one million, two hundred twenty-three thousand, one hundred forty-four".