121211007 has 8 divisors (see below), whose sum is σ = 161665584. Its totient is φ = 80781888.

The previous prime is 121210951. The next prime is 121211017. The reversal of 121211007 is 700112121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-121211007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121211017) 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, 14893 + ... + 21545.

It is an arithmetic number, because the mean of its divisors is an integer number (20208198).

Almost surely, 2^121211007 is an apocalyptic number.

121211007 is a deficient number, since it is larger than the sum of its proper divisors (40454577).

121211007 is an equidigital number, since it uses as much as digits as its factorization.

121211007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12729.

The product of its (nonzero) digits is 28, while the sum is 15.

The square root of 121211007 is about 11009.5870494765. The cubic root of 121211007 is about 494.8960867478.

Adding to 121211007 its reverse (700112121), we get a palindrome (821323128).

The spelling of 121211007 in words is "one hundred twenty-one million, two hundred eleven thousand, seven".