1010211001220 has 12 divisors (see below), whose sum is σ = 2121443102604. Its totient is φ = 404084400480.

The previous prime is 1010211001193. The next prime is 1010211001249. The reversal of 1010211001220 is 221001120101.

It can be written as a sum of positive squares in 2 ways, for example, as 393081349444 + 617129651776 = 626962^2 + 785576^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25255275011 + ... + 25255275050.

It is an arithmetic number, because the mean of its divisors is an integer number (176786925217).

Almost surely, 2^{1010211001220} is an apocalyptic number.

1010211001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1010211001220 is an abundant number, since it is smaller than the sum of its proper divisors (1111232101384).

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

1010211001220 is a wasteful number, since it uses less digits than its factorization.

1010211001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50510550070 (or 50510550068 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1010211001220 its reverse (221001120101), we get a palindrome (1231212121321).

The spelling of 1010211001220 in words is "one trillion, ten billion, two hundred eleven million, one thousand, two hundred twenty".