121212110010102 has 128 divisors (see below), whose sum is σ = 259122037063680. Its totient is φ = 37731492213120.

The previous prime is 121212110010083. The next prime is 121212110010137. The reversal of 121212110010102 is 201010011212121.

It is a happy number.

It is a super-2 number, since 2×121212110010102² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 940271383 + ... + 940400285.

It is an arithmetic number, because the mean of its divisors is an integer number (2024390914560).

Almost surely, 2^{121212110010102} is an apocalyptic number.

121212110010102 is an abundant number, since it is smaller than the sum of its proper divisors (137909927053578).

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

121212110010102 is a wasteful number, since it uses less digits than its factorization.

121212110010102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130098.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121212110010102 its reverse (201010011212121), we get a palindrome (322222121222223).

The spelling of 121212110010102 in words is "one hundred twenty-one trillion, two hundred twelve billion, one hundred ten million, ten thousand, one hundred two".