21111212333002 has 32 divisors (see below), whose sum is σ = 35452834694784. Its totient is φ = 9347056171200.

The previous prime is 21111212332999. The next prime is 21111212333083. The reversal of 21111212333002 is 20033321211112.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76226613 + ... + 76503064.

It is an arithmetic number, because the mean of its divisors is an integer number (1107901084212).

Almost surely, 2^{21111212333002} is an apocalyptic number.

21111212333002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21111212333002 is a deficient number, since it is larger than the sum of its proper divisors (14341622361782).

21111212333002 is a wasteful number, since it uses less digits than its factorization.

21111212333002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152729854.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 21111212333002 its reverse (20033321211112), we get a palindrome (41144533544114).

The spelling of 21111212333002 in words is "twenty-one trillion, one hundred eleven billion, two hundred twelve million, three hundred thirty-three thousand, two".