61111102 has 16 divisors (see below), whose sum is σ = 100194192. Its totient is φ = 27783360.

The previous prime is 61111031. The next prime is 61111103. The reversal of 61111102 is 20111116.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61111103) 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, 15799 + ... + 19282.

It is an arithmetic number, because the mean of its divisors is an integer number (6262137).

Almost surely, 2^61111102 is an apocalyptic number.

61111102 is a deficient number, since it is larger than the sum of its proper divisors (39083090).

61111102 is a wasteful number, since it uses less digits than its factorization.

61111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35163.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 61111102 is about 7817.3590169571. The cubic root of 61111102 is about 393.8885639141. Note that the first 3 decimals are identical.

Adding to 61111102 its reverse (20111116), we get a palindrome (81222218).

The spelling of 61111102 in words is "sixty-one million, one hundred eleven thousand, one hundred two".