2121123133030 has 16 divisors (see below), whose sum is σ = 4165114515984. Its totient is φ = 771317502880.

The previous prime is 2121123132943. The next prime is 2121123133049. The reversal of 2121123133030 is 303313211212.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 2121123132992 and 2121123133010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9641468677 + ... + 9641468896.

It is an arithmetic number, because the mean of its divisors is an integer number (260319657249).

Almost surely, 2^{2121123133030} is an apocalyptic number.

2121123133030 is a deficient number, since it is larger than the sum of its proper divisors (2043991382954).

2121123133030 is a wasteful number, since it uses less digits than its factorization.

2121123133030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19282937591.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 2121123133030 its reverse (303313211212), we get a palindrome (2424436344242).

The spelling of 2121123133030 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-three million, one hundred thirty-three thousand, thirty".