20120120212 has 6 divisors (see below), whose sum is σ = 35210210378. Its totient is φ = 10060060104.

The previous prime is 20120120197. The next prime is 20120120299. The reversal of 20120120212 is 21202102102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18356456196 + 1763664016 = 135486^2 + 41996^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20120120192 and 20120120201.

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, 2515015023 + ... + 2515015030.

Almost surely, 2^20120120212 is an apocalyptic number.

It is an amenable number.

20120120212 is a deficient number, since it is larger than the sum of its proper divisors (15090090166).

20120120212 is a wasteful number, since it uses less digits than its factorization.

20120120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5030030057 (or 5030030055 counting only the distinct ones).

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

Adding to 20120120212 its reverse (21202102102), we get a palindrome (41322222314).

The spelling of 20120120212 in words is "twenty billion, one hundred twenty million, one hundred twenty thousand, two hundred twelve".