1220111221102 has 32 divisors (see below), whose sum is σ = 1955322633600. Its totient is φ = 569338200288.

The previous prime is 1220111221099. The next prime is 1220111221129. The reversal of 1220111221102 is 2011221110221.

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, 537024 + ... + 1651852.

It is an arithmetic number, because the mean of its divisors is an integer number (61103832300).

Almost surely, 2^{1220111221102} is an apocalyptic number.

1220111221102 is a deficient number, since it is larger than the sum of its proper divisors (735211412498).

1220111221102 is a wasteful number, since it uses less digits than its factorization.

1220111221102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115280.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1220111221102 its reverse (2011221110221), we get a palindrome (3231332331323).

The spelling of 1220111221102 in words is "one trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty-one thousand, one hundred two".