1214257121 has 8 divisors (see below), whose sum is σ = 1513879104. Its totient is φ = 946174320.

The previous prime is 1214257117. The next prime is 1214257133. The reversal of 1214257121 is 1217524121.

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

It is not a de Polignac number, because 1214257121 - 2² = 1214257117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1214257151) 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, 7884710 + ... + 7884863.

It is an arithmetic number, because the mean of its divisors is an integer number (189234888).

Almost surely, 2^1214257121 is an apocalyptic number.

1214257121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1214257121 is a deficient number, since it is larger than the sum of its proper divisors (299621983).

1214257121 is a wasteful number, since it uses less digits than its factorization.

1214257121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15769591.

The product of its digits is 1120, while the sum is 26.

The square root of 1214257121 is about 34846.1923457930. The cubic root of 1214257121 is about 1066.8504703550.

The spelling of 1214257121 in words is "one billion, two hundred fourteen million, two hundred fifty-seven thousand, one hundred twenty-one".