102211142 has 8 divisors (see below), whose sum is σ = 167254632. Its totient is φ = 46459600.

The previous prime is 102211121. The next prime is 102211147. The reversal of 102211142 is 241112201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102211147) 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, 2322959 + ... + 2323002.

It is an arithmetic number, because the mean of its divisors is an integer number (20906829).

Almost surely, 2^102211142 is an apocalyptic number.

102211142 is a deficient number, since it is larger than the sum of its proper divisors (65043490).

102211142 is a wasteful number, since it uses less digits than its factorization.

102211142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4645974.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 102211142 is about 10109.9526210561. The cubic root of 102211142 is about 467.5550443733. Note that the first 3 decimals are identical.

Adding to 102211142 its reverse (241112201), we get a palindrome (343323343).

The spelling of 102211142 in words is "one hundred two million, two hundred eleven thousand, one hundred forty-two".