1210121221002 has 64 divisors (see below), whose sum is σ = 2510233334784. Its totient is φ = 388598031360.

The previous prime is 1210121220953. The next prime is 1210121221061. The reversal of 1210121221002 is 2001221210121.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24835888 + ... + 24884564.

It is an arithmetic number, because the mean of its divisors is an integer number (39222395856).

Almost surely, 2^{1210121221002} is an apocalyptic number.

1210121221002 is an abundant number, since it is smaller than the sum of its proper divisors (1300112113782).

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

1210121221002 is a wasteful number, since it uses less digits than its factorization.

1210121221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49823.

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

Adding to 1210121221002 its reverse (2001221210121), we get a palindrome (3211342431123).

The spelling of 1210121221002 in words is "one trillion, two hundred ten billion, one hundred twenty-one million, two hundred twenty-one thousand, two".