21441405023331 has 16 divisors (see below), whose sum is σ = 29361665362944. Its totient is φ = 13907719509984.

The previous prime is 21441405023309. The next prime is 21441405023377. The reversal of 21441405023331 is 13332050414412.

It is not a de Polignac number, because 21441405023331 - 2¹⁰ = 21441405022307 is a prime.

It is a super-2 number, since 2×21441405023331² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21441405023292 and 21441405023301.

It is not an unprimeable number, because it can be changed into a prime (21441405025331) 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, 5719336 + ... + 8694458.

It is an arithmetic number, because the mean of its divisors is an integer number (1835104085184).

Almost surely, 2^{21441405023331} is an apocalyptic number.

21441405023331 is a deficient number, since it is larger than the sum of its proper divisors (7920260339613).

21441405023331 is a wasteful number, since it uses less digits than its factorization.

21441405023331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3040090.

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 21441405023331 its reverse (13332050414412), we get a palindrome (34773455437743).

The spelling of 21441405023331 in words is "twenty-one trillion, four hundred forty-one billion, four hundred five million, twenty-three thousand, three hundred thirty-one".