121400102 has 4 divisors (see below), whose sum is σ = 182100156. Its totient is φ = 60700050.

The previous prime is 121400099. The next prime is 121400129. The reversal of 121400102 is 201004121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 201004121 = 2347 ⋅85643.

It is a super-2 number, since 2×121400102² = 29475969531220808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30350024 + ... + 30350027.

It is an arithmetic number, because the mean of its divisors is an integer number (45525039).

Almost surely, 2^121400102 is an apocalyptic number.

121400102 is a deficient number, since it is larger than the sum of its proper divisors (60700054).

121400102 is an equidigital number, since it uses as much as digits as its factorization.

121400102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60700053.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 121400102 is about 11018.1714453897. The cubic root of 121400102 is about 495.1533069339.

Adding to 121400102 its reverse (201004121), we get a palindrome (322404223).

The spelling of 121400102 in words is "one hundred twenty-one million, four hundred thousand, one hundred two".