102205137254 has 16 divisors (see below), whose sum is σ = 167661853776. Its totient is φ = 46341024000.

The previous prime is 102205137253. The next prime is 102205137271. The reversal of 102205137254 is 452731502201.

It is a super-2 number, since 2×102205137254² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102205137254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102205137253) 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, 5783807 + ... + 5801450.

It is an arithmetic number, because the mean of its divisors is an integer number (10478865861).

Almost surely, 2^102205137254 is an apocalyptic number.

102205137254 is a deficient number, since it is larger than the sum of its proper divisors (65456716522).

102205137254 is a wasteful number, since it uses less digits than its factorization.

102205137254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11585671.

The product of its (nonzero) digits is 16800, while the sum is 32.

Adding to 102205137254 its reverse (452731502201), we get a palindrome (554936639455).

The spelling of 102205137254 in words is "one hundred two billion, two hundred five million, one hundred thirty-seven thousand, two hundred fifty-four".