21121100122002 has 8 divisors (see below), whose sum is σ = 42242200244016. Its totient is φ = 7040366707332.

The previous prime is 21121100121977. The next prime is 21121100122037. The reversal of 21121100122002 is 20022100112112.

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

21121100122002 is an admirable number.

It is a super-2 number, since 2×21121100122002² (a number of 27 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 1760091676828 + ... + 1760091676839.

It is an arithmetic number, because the mean of its divisors is an integer number (5280275030502).

Almost surely, 2^{21121100122002} is an apocalyptic number.

21121100122002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21121100122002 is a wasteful number, since it uses less digits than its factorization.

21121100122002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520183353672.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21121100122002 its reverse (20022100112112), we get a palindrome (41143200234114).

The spelling of 21121100122002 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred million, one hundred twenty-two thousand, two".