70210220001221 has 4 divisors (see below), whose sum is σ = 72475065807744. Its totient is φ = 67945374194700.

The previous prime is 70210220001211. The next prime is 70210220001241. The reversal of 70210220001221 is 12210002201207.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70210220001221 - 2³⁴ = 70193040132037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 70210220001193 and 70210220001202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70210220001211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1132422903215 + ... + 1132422903276.

It is an arithmetic number, because the mean of its divisors is an integer number (18118766451936).

Almost surely, 2^{70210220001221} is an apocalyptic number.

It is an amenable number.

70210220001221 is a deficient number, since it is larger than the sum of its proper divisors (2264845806523).

70210220001221 is a wasteful number, since it uses less digits than its factorization.

70210220001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264845806522.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 70210220001221 its reverse (12210002201207), we get a palindrome (82420222202428).

The spelling of 70210220001221 in words is "seventy trillion, two hundred ten billion, two hundred twenty million, one thousand, two hundred twenty-one".