101223140 has 24 divisors (see below), whose sum is σ = 214454520. Its totient is φ = 40130048.

The previous prime is 101223121. The next prime is 101223179. The reversal of 101223140 is 41322101.

It can be written as a sum of positive squares in 4 ways, for example, as 7365796 + 93857344 = 2714^2 + 9688^2 .

It is a super-2 number, since 2×101223140² = 20492248142919200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20135 + ... + 24654.

It is an arithmetic number, because the mean of its divisors is an integer number (8935605).

Almost surely, 2^101223140 is an apocalyptic number.

101223140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101223140 is an abundant number, since it is smaller than the sum of its proper divisors (113231380).

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

101223140 is a wasteful number, since it uses less digits than its factorization.

101223140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44911 (or 44909 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 101223140 is about 10060.9711260892. The cubic root of 101223140 is about 466.0436573023.

Adding to 101223140 its reverse (41322101), we get a palindrome (142545241).

The spelling of 101223140 in words is "one hundred one million, two hundred twenty-three thousand, one hundred forty".