133311212220021 has 32 divisors (see below), whose sum is σ = 196540908226560. Its totient is φ = 79701515625600.

The previous prime is 133311212220019. The next prime is 133311212220071. The reversal of 133311212220021 is 120022212113331.

It is not a de Polignac number, because 133311212220021 - 2¹ = 133311212220019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133311212219973 and 133311212220000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133311212220071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51391075 + ... + 53922768.

It is an arithmetic number, because the mean of its divisors is an integer number (6141903382080).

Almost surely, 2^{133311212220021} is an apocalyptic number.

133311212220021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133311212220021 is a deficient number, since it is larger than the sum of its proper divisors (63229696006539).

133311212220021 is a wasteful number, since it uses less digits than its factorization.

133311212220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105314377.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 133311212220021 its reverse (120022212113331), we get a palindrome (253333424333352).

The spelling of 133311212220021 in words is "one hundred thirty-three trillion, three hundred eleven billion, two hundred twelve million, two hundred twenty thousand, twenty-one".