1121020212102 has 64 divisors (see below), whose sum is σ = 2608932188160. Its totient is φ = 314479668384.

The previous prime is 1121020212073. The next prime is 1121020212131. The reversal of 1121020212102 is 2012120201211.

It is an interprime number because it is at equal distance from previous prime (1121020212073) and next prime (1121020212131).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1764553 + ... + 2314235.

It is an arithmetic number, because the mean of its divisors is an integer number (40764565440).

Almost surely, 2^{1121020212102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121020212102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1304466094080).

1121020212102 is an abundant number, since it is smaller than the sum of its proper divisors (1487911976058).

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

1121020212102 is a wasteful number, since it uses less digits than its factorization.

1121020212102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550577.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1121020212102 its reverse (2012120201211), we get a palindrome (3133140413313).

The spelling of 1121020212102 in words is "one trillion, one hundred twenty-one billion, twenty million, two hundred twelve thousand, one hundred two".