121011102 has 12 divisors (see below), whose sum is σ = 262190760. Its totient is φ = 40337028.

The previous prime is 121011101. The next prime is 121011109. The reversal of 121011102 is 201110121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3361402 + ... + 3361437.

It is an arithmetic number, because the mean of its divisors is an integer number (21849230).

Almost surely, 2^121011102 is an apocalyptic number.

121011102 is an abundant number, since it is smaller than the sum of its proper divisors (141179658).

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

121011102 is a wasteful number, since it uses less digits than its factorization.

121011102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6722847 (or 6722844 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 121011102 is about 11000.5046247888. The cubic root of 121011102 is about 494.6238709870.

Adding to 121011102 its reverse (201110121), we get a palindrome (322121223).

It can be divided in two parts, 12101 and 1102, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 121011102 in words is "one hundred twenty-one million, eleven thousand, one hundred two".