10101001212 has 48 divisors (see below), whose sum is σ = 26203161600. Its totient is φ = 3365022960.

The previous prime is 10101001199. The next prime is 10101001247. The reversal of 10101001212 is 21210010101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 10101001194 and 10101001203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163387 + ... + 216557.

It is an arithmetic number, because the mean of its divisors is an integer number (545899200).

Almost surely, 2^10101001212 is an apocalyptic number.

10101001212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10101001212 is an abundant number, since it is smaller than the sum of its proper divisors (16102160388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10101001212 is a wasteful number, since it uses less digits than its factorization.

10101001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54943 (or 54935 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10101001212 its reverse (21210010101), we get a palindrome (31311011313).

The spelling of 10101001212 in words is "ten billion, one hundred one million, one thousand, two hundred twelve".