1022101221220 has 24 divisors (see below), whose sum is σ = 2146535100864. Its totient is φ = 408817148256.

The previous prime is 1022101221217. The next prime is 1022101221241. The reversal of 1022101221220 is 221221012201.

It is a happy number.

It is a super-3 number, since 3×1022101221220³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1022101221194 and 1022101221203.

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, 1097494 + ... + 1802413.

It is an arithmetic number, because the mean of its divisors is an integer number (89438962536).

Almost surely, 2^{1022101221220} is an apocalyptic number.

1022101221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022101221220 is an abundant number, since it is smaller than the sum of its proper divisors (1124433879644).

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

1022101221220 is a wasteful number, since it uses less digits than its factorization.

1022101221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2917539 (or 2917537 counting only the distinct ones).

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

Adding to 1022101221220 its reverse (221221012201), we get a palindrome (1243322233421).

The spelling of 1022101221220 in words is "one trillion, twenty-two billion, one hundred one million, two hundred twenty-one thousand, two hundred twenty".