121400212 has 12 divisors (see below), whose sum is σ = 212718016. Its totient is φ = 60623640.

The previous prime is 121400207. The next prime is 121400231. The reversal of 121400212 is 212004121.

It is a happy number.

It is a super-2 number, since 2×121400212² = 29476022947289888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121400192 and 121400201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15468 + ... + 21955.

Almost surely, 2^121400212 is an apocalyptic number.

It is an amenable number.

121400212 is a deficient number, since it is larger than the sum of its proper divisors (91317804).

121400212 is a wasteful number, since it uses less digits than its factorization.

121400212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38238 (or 38236 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 121400212 is about 11018.1764371424. The cubic root of 121400212 is about 495.1534564858.

Adding to 121400212 its reverse (212004121), we get a palindrome (333404333).

The spelling of 121400212 in words is "one hundred twenty-one million, four hundred thousand, two hundred twelve".