101211222220220 has 24 divisors (see below), whose sum is σ = 242906933328864. Its totient is φ = 34700990475456.

The previous prime is 101211222220219. The next prime is 101211222220259. The reversal of 101211222220220 is 22022222112101.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 101211222220192 and 101211222220201.

It is a congruent number.

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, 361468650647 + ... + 361468650926.

It is an arithmetic number, because the mean of its divisors is an integer number (10121122222036).

Almost surely, 2^{101211222220220} is an apocalyptic number.

101211222220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101211222220220 is an abundant number, since it is smaller than the sum of its proper divisors (141695711108644).

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

101211222220220 is a wasteful number, since it uses less digits than its factorization.

101211222220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722937301589 (or 722937301587 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 101211222220220 its reverse (22022222112101), we get a palindrome (123233444332321).

The spelling of 101211222220220 in words is "one hundred one trillion, two hundred eleven billion, two hundred twenty-two million, two hundred twenty thousand, two hundred twenty".