102011120212 has 6 divisors (see below), whose sum is σ = 178519460378. Its totient is φ = 51005560104.

The previous prime is 102011120173. The next prime is 102011120257. The reversal of 102011120212 is 212021110201.

It can be written as a sum of positive squares in only one way, i.e., 88593141316 + 13417978896 = 297646^2 + 115836^2 .

It is a super-2 number, since 2×102011120212² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102011120192 and 102011120201.

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, 12751390023 + ... + 12751390030.

Almost surely, 2^102011120212 is an apocalyptic number.

It is an amenable number.

102011120212 is a deficient number, since it is larger than the sum of its proper divisors (76508340166).

102011120212 is a wasteful number, since it uses less digits than its factorization.

102011120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25502780057 (or 25502780055 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102011120212 its reverse (212021110201), we get a palindrome (314032230413).

The spelling of 102011120212 in words is "one hundred two billion, eleven million, one hundred twenty thousand, two hundred twelve".