20120122102 has 4 divisors (see below), whose sum is σ = 30180183156. Its totient is φ = 10060061050.

The previous prime is 20120122079. The next prime is 20120122147. The reversal of 20120122102 is 20122102102.

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, 5030030524 + ... + 5030030527.

It is an arithmetic number, because the mean of its divisors is an integer number (7545045789).

Almost surely, 2^20120122102 is an apocalyptic number.

20120122102 is a deficient number, since it is larger than the sum of its proper divisors (10060061054).

20120122102 is a wasteful number, since it uses less digits than its factorization.

20120122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10060061053.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20120122102 its reverse (20122102102), we get a palindrome (40242224204).

The spelling of 20120122102 in words is "twenty billion, one hundred twenty million, one hundred twenty-two thousand, one hundred two".