121206072 has 32 divisors (see below), whose sum is σ = 326324880. Its totient is φ = 37294080.

The previous prime is 121206037. The next prime is 121206077. The reversal of 121206072 is 270602121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121206077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193929 + ... + 194552.

Almost surely, 2^121206072 is an apocalyptic number.

121206072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121206072 is an abundant number, since it is smaller than the sum of its proper divisors (205118808).

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

121206072 is a wasteful number, since it uses less digits than its factorization.

121206072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388503 (or 388499 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 121206072 is about 11009.3629243476. The cubic root of 121206072 is about 494.8893702364.

Adding to 121206072 its reverse (270602121), we get a palindrome (391808193).

The spelling of 121206072 in words is "one hundred twenty-one million, two hundred six thousand, seventy-two".