120212211021221 has 8 divisors (see below), whose sum is σ = 134190375093984. Its totient is φ = 106742343823920.

The previous prime is 120212211021113. The next prime is 120212211021233. The reversal of 120212211021221 is 122120112212021.

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

It is a cyclic number.

It is not a de Polignac number, because 120212211021221 - 2³⁴ = 120195031152037 is a prime.

It is a super-2 number, since 2×120212211021221² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 120212211021193 and 120212211021202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120212211021421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127074218366 + ... + 127074219311.

It is an arithmetic number, because the mean of its divisors is an integer number (16773796886748).

Almost surely, 2^{120212211021221} is an apocalyptic number.

120212211021221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120212211021221 is a deficient number, since it is larger than the sum of its proper divisors (13978164072763).

120212211021221 is a wasteful number, since it uses less digits than its factorization.

120212211021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254148437731.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 120212211021221 its reverse (122120112212021), we get a palindrome (242332323233242).

The spelling of 120212211021221 in words is "one hundred twenty trillion, two hundred twelve billion, two hundred eleven million, twenty-one thousand, two hundred twenty-one".