1220121100202 has 32 divisors (see below), whose sum is σ = 1890659559888. Its totient is φ = 590225066496.

The previous prime is 1220121100169. The next prime is 1220121100213. The reversal of 1220121100202 is 2020011210221.

It can be written as a sum of positive squares in 8 ways, for example, as 1206616568521 + 13504531681 = 1098461^2 + 116209^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43728968 + ... + 43756860.

Almost surely, 2^{1220121100202} is an apocalyptic number.

1220121100202 is a deficient number, since it is larger than the sum of its proper divisors (670538459686).

1220121100202 is a wasteful number, since it uses less digits than its factorization.

1220121100202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33674.

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

Adding to 1220121100202 its reverse (2020011210221), we get a palindrome (3240132310423).

The spelling of 1220121100202 in words is "one trillion, two hundred twenty billion, one hundred twenty-one million, one hundred thousand, two hundred two".