101220110212 has 24 divisors (see below), whose sum is σ = 197338944600. Its totient is φ = 45106043136.

The previous prime is 101220110179. The next prime is 101220110219. The reversal of 101220110212 is 212011022101.

It can be written as a sum of positive squares in 4 ways, for example, as 31167783936 + 70052326276 = 176544^2 + 264674^2 .

It is a super-2 number, since 2×101220110212² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 101220110192 and 101220110201.

It is not an unprimeable number, because it can be changed into a prime (101220110219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33559537 + ... + 33562552.

It is an arithmetic number, because the mean of its divisors is an integer number (8222456025).

Almost surely, 2^101220110212 is an apocalyptic number.

It is an amenable number.

101220110212 is a deficient number, since it is larger than the sum of its proper divisors (96118834388).

101220110212 is a wasteful number, since it uses less digits than its factorization.

101220110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67122135 (or 67122133 counting only the distinct ones).

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

Adding to 101220110212 its reverse (212011022101), we get a palindrome (313231132313).

The spelling of 101220110212 in words is "one hundred one billion, two hundred twenty million, one hundred ten thousand, two hundred twelve".