101211202121212 has 12 divisors (see below), whose sum is σ = 177175601079736. Its totient is φ = 50589601812720.

The previous prime is 101211202121189. The next prime is 101211202121221. The reversal of 101211202121212 is 212121202112101.

It is a happy number.

It is a super-3 number, since 3×101211202121212³ (a number of 43 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 101211202121212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3999797739 + ... + 3999823042.

Almost surely, 2^{101211202121212} is an apocalyptic number.

It is an amenable number.

101211202121212 is a deficient number, since it is larger than the sum of its proper divisors (75964398958524).

101211202121212 is a wasteful number, since it uses less digits than its factorization.

101211202121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7999623948 (or 7999623946 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 101211202121212 its reverse (212121202112101), we get a palindrome (313332404233313).

The spelling of 101211202121212 in words is "one hundred one trillion, two hundred eleven billion, two hundred two million, one hundred twenty-one thousand, two hundred twelve".