1221001102022 has 16 divisors (see below), whose sum is σ = 1991914978032. Its totient is φ = 557959375200.

The previous prime is 1221001102007. The next prime is 1221001102037. The reversal of 1221001102022 is 2202011001221.

It is an interprime number because it is at equal distance from previous prime (1221001102007) and next prime (1221001102037).

It is a super-2 number, since 2×1221001102022² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1221001101988 and 1221001102006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232480448 + ... + 232485699.

It is an arithmetic number, because the mean of its divisors is an integer number (124494686127).

Almost surely, 2^{1221001102022} is an apocalyptic number.

1221001102022 is a deficient number, since it is larger than the sum of its proper divisors (770913876010).

1221001102022 is a wasteful number, since it uses less digits than its factorization.

1221001102022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464966263.

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

Adding to 1221001102022 its reverse (2202011001221), we get a palindrome (3423012103243).

The spelling of 1221001102022 in words is "one trillion, two hundred twenty-one billion, one million, one hundred two thousand, twenty-two".