133211012121 has 48 divisors (see below), whose sum is σ = 211578913728. Its totient is φ = 80093865600.

The previous prime is 133211012111. The next prime is 133211012131. The reversal of 133211012121 is 121210112331.

It is an interprime number because it is at equal distance from previous prime (133211012111) and next prime (133211012131).

It is not a de Polignac number, because 133211012121 - 2⁶ = 133211012057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133211012094 and 133211012103.

It is not an unprimeable number, because it can be changed into a prime (133211012101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6611755 + ... + 6631871.

It is an arithmetic number, because the mean of its divisors is an integer number (4407894036).

Almost surely, 2^133211012121 is an apocalyptic number.

133211012121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133211012121 is a deficient number, since it is larger than the sum of its proper divisors (78367901607).

133211012121 is a wasteful number, since it uses less digits than its factorization.

133211012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20662 (or 20659 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 133211012121 its reverse (121210112331), we get a palindrome (254421124452).

The spelling of 133211012121 in words is "one hundred thirty-three billion, two hundred eleven million, twelve thousand, one hundred twenty-one".