101221012200220 has 48 divisors (see below), whose sum is σ = 232643473147008. Its totient is φ = 36687746180160.

The previous prime is 101221012200211. The next prime is 101221012200257. The reversal of 101221012200220 is 22002210122101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 101221012200194 and 101221012200203.

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, 749273682 + ... + 749408761.

It is an arithmetic number, because the mean of its divisors is an integer number (4846739023896).

Almost surely, 2^{101221012200220} is an apocalyptic number.

101221012200220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101221012200220 is an abundant number, since it is smaller than the sum of its proper divisors (131422460946788).

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

101221012200220 is a wasteful number, since it uses less digits than its factorization.

101221012200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498682770 (or 1498682768 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 101221012200220 its reverse (22002210122101), we get a palindrome (123223222322321).

It can be divided in two parts, 10122101 and 2200220, that added together give a palindrome (12322321).

The spelling of 101221012200220 in words is "one hundred one trillion, two hundred twenty-one billion, twelve million, two hundred thousand, two hundred twenty".