1220121654622 has 32 divisors (see below), whose sum is σ = 1994975347680. Its totient is φ = 556298371200.

The previous prime is 1220121654607. The next prime is 1220121654649. The reversal of 1220121654622 is 2264561210221.

It is a congruent number.

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, 638904 + ... + 1687732.

It is an arithmetic number, because the mean of its divisors is an integer number (62342979615).

Almost surely, 2^{1220121654622} is an apocalyptic number.

1220121654622 is a deficient number, since it is larger than the sum of its proper divisors (774853693058).

1220121654622 is a wasteful number, since it uses less digits than its factorization.

1220121654622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049388.

The product of its (nonzero) digits is 23040, while the sum is 34.

Adding to 1220121654622 its reverse (2264561210221), we get a palindrome (3484682864843).

The spelling of 1220121654622 in words is "one trillion, two hundred twenty billion, one hundred twenty-one million, six hundred fifty-four thousand, six hundred twenty-two".