2121211023 has 16 divisors (see below), whose sum is σ = 3018240000. Its totient is φ = 1320471936.

The previous prime is 2121211021. The next prime is 2121211033. The reversal of 2121211023 is 3201121212.

It is not a de Polignac number, because 2121211023 - 2¹ = 2121211021 is a prime.

It is a super-3 number, since 3×2121211023³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2121210993 and 2121211011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121211021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157273 + ... + 170226.

It is an arithmetic number, because the mean of its divisors is an integer number (188640000).

Almost surely, 2^2121211023 is an apocalyptic number.

2121211023 is a deficient number, since it is larger than the sum of its proper divisors (897028977).

2121211023 is a wasteful number, since it uses less digits than its factorization.

2121211023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327646.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2121211023 is about 46056.6067247686. The cubic root of 2121211023 is about 1284.8762209750.

Adding to 2121211023 its reverse (3201121212), we get a palindrome (5322332235).

The spelling of 2121211023 in words is "two billion, one hundred twenty-one million, two hundred eleven thousand, twenty-three".