1220220212002 has 24 divisors (see below), whose sum is σ = 2011991675148. Its totient is φ = 554606680320.

The previous prime is 1220220211967. The next prime is 1220220212009. The reversal of 1220220212002 is 2002120220221.

It can be written as a sum of positive squares in 2 ways, for example, as 1067996166721 + 152224045281 = 1033439^2 + 390159^2 .

It is not an unprimeable number, because it can be changed into a prime (1220220212009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3435838 + ... + 3774310.

Almost surely, 2^{1220220212002} is an apocalyptic number.

1220220212002 is a deficient number, since it is larger than the sum of its proper divisors (791771463146).

1220220212002 is a wasteful number, since it uses less digits than its factorization.

1220220212002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353394 (or 353383 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 1220220212002 its reverse (2002120220221), we get a palindrome (3222340432223).

The spelling of 1220220212002 in words is "one trillion, two hundred twenty billion, two hundred twenty million, two hundred twelve thousand, two".