101121122220 has 24 divisors (see below), whose sum is σ = 283139142384. Its totient is φ = 26965632576.

The previous prime is 101121122209. The next prime is 101121122281. The reversal of 101121122220 is 22221121101.

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

It is a self number, because there is not a number n which added to its sum of digits gives 101121122220.

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, 842675959 + ... + 842676078.

It is an arithmetic number, because the mean of its divisors is an integer number (11797464266).

Almost surely, 2^101121122220 is an apocalyptic number.

101121122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101121122220 is an abundant number, since it is smaller than the sum of its proper divisors (182018020164).

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

101121122220 is a wasteful number, since it uses less digits than its factorization.

101121122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685352049 (or 1685352047 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 101121122220 its reverse (22221121101), we get a palindrome (123342243321).

The spelling of 101121122220 in words is "one hundred one billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty".