221001022101002 has 64 divisors (see below), whose sum is σ = 410049808842240. Its totient is φ = 87826776292800.

The previous prime is 221001022100927. The next prime is 221001022101007. The reversal of 221001022101002 is 200101220100122.

It is not an unprimeable number, because it can be changed into a prime (221001022101007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18525977 + ... + 28021667.

It is an arithmetic number, because the mean of its divisors is an integer number (6407028263160).

Almost surely, 2^{221001022101002} is an apocalyptic number.

221001022101002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221001022101002 is a deficient number, since it is larger than the sum of its proper divisors (189048786741238).

221001022101002 is a wasteful number, since it uses less digits than its factorization.

221001022101002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9500019.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221001022101002 its reverse (200101220100122), we get a palindrome (421102242201124).

The spelling of 221001022101002 in words is "two hundred twenty-one trillion, one billion, twenty-two million, one hundred one thousand, two".