101021220221212 has 12 divisors (see below), whose sum is σ = 177296608402200. Its totient is φ = 50365046392016.

The previous prime is 101021220221167. The next prime is 101021220221219. The reversal of 101021220221212 is 212122022120101.

It is a super-2 number, since 2×101021220221212² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 101021220221212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101021220221219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36390928087 + ... + 36390930862.

It is an arithmetic number, because the mean of its divisors is an integer number (14774717366850).

Almost surely, 2^{101021220221212} is an apocalyptic number.

It is an amenable number.

101021220221212 is a deficient number, since it is larger than the sum of its proper divisors (76275388180988).

101021220221212 is a wasteful number, since it uses less digits than its factorization.

101021220221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72781859300 (or 72781859298 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 101021220221212 its reverse (212122022120101), we get a palindrome (313143242341313).

The spelling of 101021220221212 in words is "one hundred one trillion, twenty-one billion, two hundred twenty million, two hundred twenty-one thousand, two hundred twelve".