70221211121 has 4 divisors (see below), whose sum is σ = 71411401200. Its totient is φ = 69031021044.

The previous prime is 70221211063. The next prime is 70221211133. The reversal of 70221211121 is 12111212207.

It is a happy number.

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 70221211121 - 2⁶ = 70221211057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70221211093 and 70221211102.

It is not an unprimeable number, because it can be changed into a prime (70221211141) 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, 595094951 + ... + 595095068.

It is an arithmetic number, because the mean of its divisors is an integer number (17852850300).

Almost surely, 2^70221211121 is an apocalyptic number.

It is an amenable number.

70221211121 is a deficient number, since it is larger than the sum of its proper divisors (1190190079).

70221211121 is a wasteful number, since it uses less digits than its factorization.

70221211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190190078.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 70221211121 its reverse (12111212207), we get a palindrome (82332423328).

The spelling of 70221211121 in words is "seventy billion, two hundred twenty-one million, two hundred eleven thousand, one hundred twenty-one".