101222140 has 12 divisors (see below), whose sum is σ = 212566536. Its totient is φ = 40488848.

The previous prime is 101222137. The next prime is 101222141. The reversal of 101222140 is 41222101.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 101222140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101222141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2530534 + ... + 2530573.

It is an arithmetic number, because the mean of its divisors is an integer number (17713878).

Almost surely, 2^101222140 is an apocalyptic number.

101222140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101222140 is an abundant number, since it is smaller than the sum of its proper divisors (111344396).

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

101222140 is a wasteful number, since it uses less digits than its factorization.

101222140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5061116 (or 5061114 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 101222140 is about 10060.9214289746. The cubic root of 101222140 is about 466.0421225900.

Adding to 101222140 its reverse (41222101), we get a palindrome (142444241).

The spelling of 101222140 in words is "one hundred one million, two hundred twenty-two thousand, one hundred forty".