201210222231220 has 48 divisors (see below), whose sum is σ = 444836353832640. Its totient is φ = 76238507771136.

The previous prime is 201210222231211. The next prime is 201210222231251. The reversal of 201210222231220 is 22132222012102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201210222231191 and 201210222231200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30221617 + ... + 36273496.

It is an arithmetic number, because the mean of its divisors is an integer number (9267424038180).

Almost surely, 2^{201210222231220} is an apocalyptic number.

201210222231220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201210222231220 is an abundant number, since it is smaller than the sum of its proper divisors (243626131601420).

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

201210222231220 is a wasteful number, since it uses less digits than its factorization.

201210222231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66503104 (or 66503102 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 201210222231220 its reverse (22132222012102), we get a palindrome (223342444243322).

The spelling of 201210222231220 in words is "two hundred one trillion, two hundred ten billion, two hundred twenty-two million, two hundred thirty-one thousand, two hundred twenty".