1214011021 has 16 divisors (see below), whose sum is σ = 1332437040. Its totient is φ = 1100968960.

The previous prime is 1214010971. The next prime is 1214011027. The reversal of 1214011021 is 1201104121.

It can be written as a sum of positive squares in 8 ways, for example, as 11655396 + 1202355625 = 3414^2 + 34675^2 .

It is not a de Polignac number, because 1214011021 - 2⁹ = 1214010509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1214010992 and 1214011010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214011027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272391 + ... + 276811.

It is an arithmetic number, because the mean of its divisors is an integer number (83277315).

Almost surely, 2^1214011021 is an apocalyptic number.

It is an amenable number.

1214011021 is a deficient number, since it is larger than the sum of its proper divisors (118426019).

1214011021 is a wasteful number, since it uses less digits than its factorization.

1214011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5024.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1214011021 is about 34842.6609345498. The cubic root of 1214011021 is about 1066.7783907172.

Adding to 1214011021 its reverse (1201104121), we get a palindrome (2415115142).

The spelling of 1214011021 in words is "one billion, two hundred fourteen million, eleven thousand, twenty-one".