20130122102 has 4 divisors (see below), whose sum is σ = 30195183156. Its totient is φ = 10065061050.

The previous prime is 20130122069. The next prime is 20130122171. The reversal of 20130122102 is 20122103102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5032530524 + ... + 5032530527.

It is an arithmetic number, because the mean of its divisors is an integer number (7548795789).

Almost surely, 2^20130122102 is an apocalyptic number.

20130122102 is a deficient number, since it is larger than the sum of its proper divisors (10065061054).

20130122102 is a wasteful number, since it uses less digits than its factorization.

20130122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10065061053.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20130122102 its reverse (20122103102), we get a palindrome (40252225204).

The spelling of 20130122102 in words is "twenty billion, one hundred thirty million, one hundred twenty-two thousand, one hundred two".