1121220102 has 32 divisors (see below), whose sum is σ = 2311487712. Its totient is φ = 362306304.

The previous prime is 1121220101. The next prime is 1121220103. The reversal of 1121220102 is 2010221211.

It is an interprime number because it is at equal distance from previous prime (1121220101) and next prime (1121220103).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121220101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52378 + ... + 70610.

It is an arithmetic number, because the mean of its divisors is an integer number (72233991).

Almost surely, 2^1121220102 is an apocalyptic number.

1121220102 is an abundant number, since it is smaller than the sum of its proper divisors (1190267610).

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

1121220102 is a wasteful number, since it uses less digits than its factorization.

1121220102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18552.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1121220102 is about 33484.6248597771. The cubic root of 1121220102 is about 1038.8757890187.

Adding to 1121220102 its reverse (2010221211), we get a palindrome (3131441313).

The spelling of 1121220102 in words is "one billion, one hundred twenty-one million, two hundred twenty thousand, one hundred two".