121023212213 has 8 divisors (see below), whose sum is σ = 121160627640. Its totient is φ = 120885842880.

The previous prime is 121023212209. The next prime is 121023212221. The reversal of 121023212213 is 312212320121.

It can be written as a sum of positive squares in 4 ways, for example, as 21849865489 + 99173346724 = 147817^2 + 314918^2 .

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 121023212213 - 2² = 121023212209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121023212203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8893931 + ... + 8907527.

It is an arithmetic number, because the mean of its divisors is an integer number (15145078455).

Almost surely, 2^121023212213 is an apocalyptic number.

It is an amenable number.

121023212213 is a deficient number, since it is larger than the sum of its proper divisors (137415427).

121023212213 is a wasteful number, since it uses less digits than its factorization.

121023212213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23047.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121023212213 its reverse (312212320121), we get a palindrome (433235532334).

The spelling of 121023212213 in words is "one hundred twenty-one billion, twenty-three million, two hundred twelve thousand, two hundred thirteen".