1220220121010 has 24 divisors (see below), whose sum is σ = 2414220638508. Its totient is φ = 443716407200.

The previous prime is 1220220121007. The next prime is 1220220121073. The reversal of 1220220121010 is 101210220221.

It can be written as a sum of positive squares in 2 ways, for example, as 1070134387729 + 150085733281 = 1034473^2 + 387409^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 504221981 + ... + 504224400.

Almost surely, 2^{1220220121010} is an apocalyptic number.

1220220121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220220121010 is a deficient number, since it is larger than the sum of its proper divisors (1194000517498).

1220220121010 is a wasteful number, since it uses less digits than its factorization.

1220220121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008446410 (or 1008446399 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1220220121010 its reverse (101210220221), we get a palindrome (1321430341231).

The spelling of 1220220121010 in words is "one trillion, two hundred twenty billion, two hundred twenty million, one hundred twenty-one thousand, ten".