2211142551 has 4 divisors (see below), whose sum is σ = 2948190072. Its totient is φ = 1474095032.

The previous prime is 2211142547. The next prime is 2211142597. The reversal of 2211142551 is 1552411122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2211142551 - 2² = 2211142547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211142501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368523756 + ... + 368523761.

It is an arithmetic number, because the mean of its divisors is an integer number (737047518).

Almost surely, 2^2211142551 is an apocalyptic number.

2211142551 is a deficient number, since it is larger than the sum of its proper divisors (737047521).

2211142551 is an equidigital number, since it uses as much as digits as its factorization.

2211142551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737047520.

The product of its digits is 800, while the sum is 24.

The square root of 2211142551 is about 47022.7875715594. The cubic root of 2211142551 is about 1302.7834936627.

Adding to 2211142551 its reverse (1552411122), we get a palindrome (3763553673).

The spelling of 2211142551 in words is "two billion, two hundred eleven million, one hundred forty-two thousand, five hundred fifty-one".