1220021121202 has 128 divisors (see below), whose sum is σ = 2345383434240. Its totient is φ = 469070300160.

The previous prime is 1220021121191. The next prime is 1220021121223. The reversal of 1220021121202 is 2021211200221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8232177 + ... + 8379067.

It is an arithmetic number, because the mean of its divisors is an integer number (18323308080).

Almost surely, 2^{1220021121202} is an apocalyptic number.

1220021121202 is a deficient number, since it is larger than the sum of its proper divisors (1125362313038).

1220021121202 is a wasteful number, since it uses less digits than its factorization.

1220021121202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147008.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1220021121202 its reverse (2021211200221), we get a palindrome (3241232321423).

The spelling of 1220021121202 in words is "one trillion, two hundred twenty billion, twenty-one million, one hundred twenty-one thousand, two hundred two".