1211413086 has 48 divisors (see below), whose sum is σ = 2838588480. Its totient is φ = 371165760.

The previous prime is 1211413067. The next prime is 1211413117. The reversal of 1211413086 is 6803141121.

It is a happy number.

It is a super-3 number, since 3×1211413086³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45096 + ... + 66756.

It is an arithmetic number, because the mean of its divisors is an integer number (59137260).

Almost surely, 2^1211413086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1211413086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1419294240).

1211413086 is an abundant number, since it is smaller than the sum of its proper divisors (1627175394).

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

1211413086 is a wasteful number, since it uses less digits than its factorization.

1211413086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21921 (or 21918 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1211413086 is about 34805.3600182501. The cubic root of 1211413086 is about 1066.0168929125.

It can be divided in two parts, 12114 and 13086, that added together give a triangular number (25200 = T₂₂₄).

The spelling of 1211413086 in words is "one billion, two hundred eleven million, four hundred thirteen thousand, eighty-six".