1020402223402 has 8 divisors (see below), whose sum is σ = 1536954387012. Its totient is φ = 508084094400.

The previous prime is 1020402223331. The next prime is 1020402223433. The reversal of 1020402223402 is 2043222040201.

1020402223402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 960617572321 + 59784651081 = 980111^2 + 244509^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1058508049 + ... + 1058509012.

Almost surely, 2^{1020402223402} is an apocalyptic number.

1020402223402 is a deficient number, since it is larger than the sum of its proper divisors (516552163610).

1020402223402 is a wasteful number, since it uses less digits than its factorization.

1020402223402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117017304.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 1020402223402 its reverse (2043222040201), we get a palindrome (3063624263603).

The spelling of 1020402223402 in words is "one trillion, twenty billion, four hundred two million, two hundred twenty-three thousand, four hundred two".