1012211101220 has 24 divisors (see below), whose sum is σ = 2318883614208. Its totient is φ = 368076764000.

The previous prime is 1012211101157. The next prime is 1012211101229. The reversal of 1012211101220 is 221011122101.

It is a junction number, because it is equal to n+sod(n) for n = 1012211101195 and 1012211101204.

It is not an unprimeable number, because it can be changed into a prime (1012211101229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2300479556 + ... + 2300479995.

It is an arithmetic number, because the mean of its divisors is an integer number (96620150592).

Almost surely, 2^{1012211101220} is an apocalyptic number.

1012211101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012211101220 is an abundant number, since it is smaller than the sum of its proper divisors (1306672512988).

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

1012211101220 is a wasteful number, since it uses less digits than its factorization.

1012211101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4600959571 (or 4600959569 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1012211101220 its reverse (221011122101), we get a palindrome (1233222223321).

The spelling of 1012211101220 in words is "one trillion, twelve billion, two hundred eleven million, one hundred one thousand, two hundred twenty".