2121121100102 has 8 divisors (see below), whose sum is σ = 3186058105776. Its totient is φ = 1059101731512.

The previous prime is 2121121100047. The next prime is 2121121100107. The reversal of 2121121100102 is 2010011211212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121121100107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729407453 + ... + 729410360.

It is an arithmetic number, because the mean of its divisors is an integer number (398257263222).

Almost surely, 2^{2121121100102} is an apocalyptic number.

2121121100102 is a deficient number, since it is larger than the sum of its proper divisors (1064937005674).

2121121100102 is a wasteful number, since it uses less digits than its factorization.

2121121100102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458818542.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2121121100102 its reverse (2010011211212), we get a palindrome (4131132311314).

The spelling of 2121121100102 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred thousand, one hundred two".