2121001231030 has 32 divisors (see below), whose sum is σ = 4165150857120. Its totient is φ = 771222117120.

The previous prime is 2121001230979. The next prime is 2121001231057. The reversal of 2121001231030 is 301321001212.

It is a junction number, because it is equal to n+sod(n) for n = 2121001230995 and 2121001231013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1051212 + ... + 2312368.

It is an arithmetic number, because the mean of its divisors is an integer number (130160964285).

Almost surely, 2^{2121001231030} is an apocalyptic number.

2121001231030 is a deficient number, since it is larger than the sum of its proper divisors (2044149626090).

2121001231030 is a wasteful number, since it uses less digits than its factorization.

2121001231030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276464.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 2121001231030 its reverse (301321001212), we get a palindrome (2422322232242).

The spelling of 2121001231030 in words is "two trillion, one hundred twenty-one billion, one million, two hundred thirty-one thousand, thirty".