21150401234091 has 8 divisors (see below), whose sum is σ = 28678510148160. Its totient is φ = 13861279904712.

The previous prime is 21150401234087. The next prime is 21150401234101. The reversal of 21150401234091 is 19043210405112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21150401234091 - 2² = 21150401234087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21150401234041) 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, 59746895965 + ... + 59746896318.

It is an arithmetic number, because the mean of its divisors is an integer number (3584813768520).

Almost surely, 2^{21150401234091} is an apocalyptic number.

21150401234091 is a deficient number, since it is larger than the sum of its proper divisors (7528108914069).

21150401234091 is a wasteful number, since it uses less digits than its factorization.

21150401234091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119493792345.

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 21150401234091 in words is "twenty-one trillion, one hundred fifty billion, four hundred one million, two hundred thirty-four thousand, ninety-one".