20120121122 has 4 divisors (see below), whose sum is σ = 30180181686. Its totient is φ = 10060060560.

The previous prime is 20120121071. The next prime is 20120121137. The reversal of 20120121122 is 22112102102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22112102102 = 2 ⋅11056051051.

It can be written as a sum of positive squares in only one way, i.e., 11687555881 + 8432565241 = 108109^2 + 91829^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20120121097 and 20120121106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5030030279 + ... + 5030030282.

Almost surely, 2^20120121122 is an apocalyptic number.

20120121122 is a deficient number, since it is larger than the sum of its proper divisors (10060060564).

20120121122 is a wasteful number, since it uses less digits than its factorization.

20120121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10060060563.

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

Adding to 20120121122 its reverse (22112102102), we get a palindrome (42232223224).

The spelling of 20120121122 in words is "twenty billion, one hundred twenty million, one hundred twenty-one thousand, one hundred twenty-two".