121022101002 has 64 divisors (see below), whose sum is σ = 272901685248. Its totient is φ = 35446632000.

The previous prime is 121022100973. The next prime is 121022101003. The reversal of 121022101002 is 200101220121.

It is not an unprimeable number, because it can be changed into a prime (121022101003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1643743 + ... + 1715789.

It is an arithmetic number, because the mean of its divisors is an integer number (4264088832).

Almost surely, 2^121022101002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121022101002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136450842624).

121022101002 is an abundant number, since it is smaller than the sum of its proper divisors (151879584246).

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

121022101002 is a wasteful number, since it uses less digits than its factorization.

121022101002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72915.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121022101002 its reverse (200101220121), we get a palindrome (321123321123).

The spelling of 121022101002 in words is "one hundred twenty-one billion, twenty-two million, one hundred one thousand, two".