2211156542 has 16 divisors (see below), whose sum is σ = 3803955072. Its totient is φ = 944288280.

The previous prime is 2211156509. The next prime is 2211156547. The reversal of 2211156542 is 2456511122.

2211156542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×2211156542³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211156547) 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, 275084 + ... + 283007.

It is an arithmetic number, because the mean of its divisors is an integer number (237747192).

Almost surely, 2^2211156542 is an apocalyptic number.

2211156542 is a deficient number, since it is larger than the sum of its proper divisors (1592798530).

2211156542 is a wasteful number, since it uses less digits than its factorization.

2211156542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558383.

The product of its digits is 4800, while the sum is 29.

The square root of 2211156542 is about 47022.9363396205. The cubic root of 2211156542 is about 1302.7862414435.

Adding to 2211156542 its reverse (2456511122), we get a palindrome (4667667664).

The spelling of 2211156542 in words is "two billion, two hundred eleven million, one hundred fifty-six thousand, five hundred forty-two".