1220020121022 has 16 divisors (see below), whose sum is σ = 2496785364480. Its totient is φ = 397215853272.

The previous prime is 1220020121017. The next prime is 1220020121059. The reversal of 1220020121022 is 2201210200221.

It is a junction number, because it is equal to n+sod(n) for n = 1220020120992 and 1220020121010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2364379822 + ... + 2364380337.

It is an arithmetic number, because the mean of its divisors is an integer number (156049085280).

Almost surely, 2^{1220020121022} is an apocalyptic number.

1220020121022 is an abundant number, since it is smaller than the sum of its proper divisors (1276765243458).

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

1220020121022 is a wasteful number, since it uses less digits than its factorization.

1220020121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4728760207.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1220020121022 its reverse (2201210200221), we get a palindrome (3421230321243).

The spelling of 1220020121022 in words is "one trillion, two hundred twenty billion, twenty million, one hundred twenty-one thousand, twenty-two".