10212001229991 has 16 divisors (see below), whose sum is σ = 15255274566528. Its totient is φ = 6021818906400.

The previous prime is 10212001229923. The next prime is 10212001229999. The reversal of 10212001229991 is 19992210021201.

It is a happy number.

10212001229991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10212001229991 - 2³⁴ = 10194821360807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212001229999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4181817465 + ... + 4181819906.

It is an arithmetic number, because the mean of its divisors is an integer number (953454660408).

Almost surely, 2^{10212001229991} is an apocalyptic number.

10212001229991 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10212001229991 is a deficient number, since it is larger than the sum of its proper divisors (5043273336537).

10212001229991 is a wasteful number, since it uses less digits than its factorization.

10212001229991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8363637422.

The product of its (nonzero) digits is 11664, while the sum is 39.

The spelling of 10212001229991 in words is "ten trillion, two hundred twelve billion, one million, two hundred twenty-nine thousand, nine hundred ninety-one".