220212022101021 has 6 divisors (see below), whose sum is σ = 318084031923710. Its totient is φ = 146808014734008.

The previous prime is 220212022100969. The next prime is 220212022101077. The reversal of 220212022101021 is 120101220212022.

It is a happy number.

220212022101021 is a `hidden beast` number, since 220 + 2 + 1 + 202 + 210 + 10 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 140119635281796 + 80092386819225 = 11837214^2 + 8949435^2 .

It is not a de Polignac number, because 220212022101021 - 2⁶ = 220212022100957 is a prime.

It is a super-2 number, since 2×220212022101021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220212022100985 and 220212022101003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220212022101091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12234001227826 + ... + 12234001227843.

Almost surely, 2^{220212022101021} is an apocalyptic number.

It is an amenable number.

220212022101021 is a deficient number, since it is larger than the sum of its proper divisors (97872009822689).

220212022101021 is a wasteful number, since it uses less digits than its factorization.

220212022101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24468002455675 (or 24468002455672 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 220212022101021 its reverse (120101220212022), we get a palindrome (340313242313043).

The spelling of 220212022101021 in words is "two hundred twenty trillion, two hundred twelve billion, twenty-two million, one hundred one thousand, twenty-one".