1214016511261 has 8 divisors (see below), whose sum is σ = 1215198839864. Its totient is φ = 1212834470400.

The previous prime is 1214016511247. The next prime is 1214016511273. The reversal of 1214016511261 is 1621156104121.

It can be written as a sum of positive squares in 4 ways, for example, as 239126868036 + 974889643225 = 489006^2 + 987365^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1214016511261 - 2⁵ = 1214016511229 is a prime.

It is a super-2 number, since 2×1214016511261² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214016511241) 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, 8912281 + ... + 9047473.

It is an arithmetic number, because the mean of its divisors is an integer number (151899854983).

Almost surely, 2^{1214016511261} is an apocalyptic number.

It is an amenable number.

1214016511261 is a deficient number, since it is larger than the sum of its proper divisors (1182328603).

1214016511261 is a wasteful number, since it uses less digits than its factorization.

1214016511261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143871.

The product of its (nonzero) digits is 2880, while the sum is 31.

The spelling of 1214016511261 in words is "one trillion, two hundred fourteen billion, sixteen million, five hundred eleven thousand, two hundred sixty-one".