2211545012 has 6 divisors (see below), whose sum is σ = 3870203778. Its totient is φ = 1105772504.

The previous prime is 2211544999. The next prime is 2211545029. The reversal of 2211545012 is 2105451122.

It can be written as a sum of positive squares in only one way, i.e., 1462756516 + 748788496 = 38246^2 + 27364^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276443123 + ... + 276443130.

It is an arithmetic number, because the mean of its divisors is an integer number (645033963).

Almost surely, 2^2211545012 is an apocalyptic number.

It is an amenable number.

2211545012 is a deficient number, since it is larger than the sum of its proper divisors (1658658766).

2211545012 is a wasteful number, since it uses less digits than its factorization.

2211545012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552886257 (or 552886255 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 2211545012 is about 47027.0668020024. The cubic root of 2211545012 is about 1302.8625308915.

Adding to 2211545012 its reverse (2105451122), we get a palindrome (4316996134).

The spelling of 2211545012 in words is "two billion, two hundred eleven million, five hundred forty-five thousand, twelve".