61121002243 has 32 divisors (see below), whose sum is σ = 72835954560. Its totient is φ = 50181949440.

The previous prime is 61121002231. The next prime is 61121002253. The reversal of 61121002243 is 34220012116.

61121002243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61121002243 - 2²⁹ = 60584131331 is a prime.

It is a super-2 number, since 2×61121002243² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61121002253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18997771 + ... + 19000987.

It is an arithmetic number, because the mean of its divisors is an integer number (2276123580).

Almost surely, 2^61121002243 is an apocalyptic number.

61121002243 is a deficient number, since it is larger than the sum of its proper divisors (11714952317).

61121002243 is a wasteful number, since it uses less digits than its factorization.

61121002243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3967.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 61121002243 its reverse (34220012116), we get a palindrome (95341014359).

The spelling of 61121002243 in words is "sixty-one billion, one hundred twenty-one million, two thousand, two hundred forty-three".