2021121221030 has 32 divisors (see below), whose sum is σ = 3852096269184. Its totient is φ = 760877485056.

The previous prime is 2021121221029. The next prime is 2021121221059. The reversal of 2021121221030 is 301221211202.

It is a super-2 number, since 2×2021121221030² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12087779 + ... + 12253841.

It is an arithmetic number, because the mean of its divisors is an integer number (120378008412).

Almost surely, 2^{2021121221030} is an apocalyptic number.

2021121221030 is a deficient number, since it is larger than the sum of its proper divisors (1830975048154).

2021121221030 is a wasteful number, since it uses less digits than its factorization.

2021121221030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237680.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2021121221030 its reverse (301221211202), we get a palindrome (2322342432232).

The spelling of 2021121221030 in words is "two trillion, twenty-one billion, one hundred twenty-one million, two hundred twenty-one thousand, thirty".